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Psychological Encyclopedia

Delay of Gratification: Psychology, Context, and Future Outcomes

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Author: Ukrainian Psychological Hub · Published: October 10, 2026 · Editorial Policy


Delay of gratification is the capacity and decision to postpone an immediately available reward in pursuit of an outcome expected to be more valuable later. It appears in choices about money, learning, relationships, work, health, and everyday pleasures. Whether someone waits depends on the value of each option, the length and uncertainty of the wait, what they believe will happen, the immediate environment, and the strategies available for managing temptation.


The famous marshmallow experiments made delayed gratification a public shorthand for self-control and future success. Contemporary evidence offers a richer account: waiting can involve cognitive control, attention, motivation, trust, and rational adaptation to opportunity. A person's decision on one occasion is information about that occasion; it is not a verdict on character or a reliable forecast of an entire life. The distinction matters for parents, educators, clinicians, and anyone trying to build sustainable behavior.


For a broader perspective on the psychology of this topic, see What Is Self-Control? Psychology, Mechanisms, and Examples.


What Is Delay of Gratification in Psychology?


In psychological research, delaying gratification usually means foregoing a smaller or more immediate benefit to obtain a larger or preferred benefit after a delay. The classic experimental version asks a child to wait for an additional treat rather than eat the available treat immediately. Adult studies may examine saving versus spending, taking a smaller payment now versus a larger payment later, or choosing a short-term comfort that conflicts with a personally meaningful objective. These tasks share a temporal trade-off but differ in what they require.


It helps to separate ability, preference, and behavior. Ability refers to what a person can do under favorable conditions; preference concerns which reward that person values; observed behavior combines these with available resources, trust, emotion, and situational constraints. Someone may be entirely able to wait yet reasonably decide that waiting is not worth the uncertainty. Conversely, a person can want the larger future reward and still struggle to maintain a chosen course when a tempting option is highly salient.


Walter Mischel, Yuichi Shoda, and Monica Rodriguez described the research program as a way to study future-oriented self-control and the psychological processes supporting it. Their account emphasized that what children attend to and think about during the wait can change performance. See the foundational review in Science.


Everyday Examples: What Does Delayed Gratification Look Like?


An employee may allocate part of today's paycheck to an emergency fund. A student may finish a difficult chapter before opening a favorite game. A person may choose to sleep rather than continue scrolling because tomorrow's functioning matters to them. Someone learning a language may accept the discomfort of practice for the future satisfaction of communication. These actions differ: some involve resisting an attractive stimulus, others involve setting up automatic payments, changing surroundings, or valuing the delayed outcome more clearly.


Waiting is valuable when the future reward is meaningful and reasonably attainable. Postponing medically necessary treatment, refusing rest, or sacrificing relationships indefinitely in the name of discipline would be a poor application of the idea. The scientific question is how people coordinate present and future interests under particular circumstances, not how much pleasure they can deny themselves.


Delay of Gratification, Self-Control, Impulsivity, and Delay Discounting


Delay of gratification and self-control


Self-control is a broader family of processes through which people bring actions into alignment with a goal when competing responses arise. Delaying a reward is one possible expression of self-control. Other expressions include leaving a tempting environment, managing attention, revising a plan, or selecting an alternative activity. People can regulate conduct effectively without repeatedly facing an intense internal contest. Duckworth, Gendler, and Gross (2016) summarize situational strategies that operate before temptation reaches peak intensity.


Delay of gratification and impulsivity


Impulsivity is an umbrella term used for several distinguishable tendencies, including acting without sufficient consideration, seeking immediate rewards, and difficulties inhibiting responses in some contexts. Selecting an immediate reward in an experiment does not by itself establish a stable impulsive personality trait. The choice may also reflect a sensible estimate that the later reward is uncertain or insufficiently valuable.


Delay discounting and intertemporal choice


Delay discounting refers to the reduction in a reward's subjective value when its delivery is delayed. In a common adult measure, participants choose between hypothetical or real amounts such as $20 today and $35 in one month. A stronger immediate preference can be modeled as steeper discounting. The specific estimated rate depends on the amounts, delays, task design, and whether the outcome is money, food, social interaction, or another reward. A scholarly review of the neural basis of delay discounting describes a distributed set of interacting processes.


The terminology overlaps, but a preschooler's effort to wait while a treat is visible differs from a series of adult monetary choices. The first includes sustained exposure to temptation and strategies for managing attention; the second often measures preferences across delayed alternatives. Findings from one method should therefore be transferred to another only with explicit evidence. The full economics and psychology of intertemporal choice belong to the neighboring decision-making research area.


How Delayed Gratification Works: Psychological Mechanisms


Reward value, timing, and probability


Choices depend on anticipated benefit as well as the cost of waiting. A later reward may be larger in nominal size but less useful because the person needs something now or suspects the opportunity will disappear. Future outcomes are also less vivid, more abstract, and sometimes genuinely uncertain. These distinctions help explain why immediate preference can be adaptive in one environment and disadvantageous in another. The evaluation of rewards is a decision process situated in time and experience.


Attention and the immediate cue


Tempting objects and thoughts draw attention toward immediate rewards. In early experiments, children delayed longer when attention was redirected or when the tempting food was represented in a less appetitive way. Mischel, Ebbesen, and Zeiss investigated these cognitive and attentional mechanisms in 1972. Their work supports a specific observation: how a reward is mentally represented and attended to can affect waiting. It does not establish a universal attention technique that works equally well for every age, task, and setting.


Emotion, arousal, and cognitive representation


Metcalfe and Mischel's hot/cool-system account proposed an interaction between relatively affective, stimulus-driven processes and more reflective, representational processes. The model remains influential for understanding why a desired reward may feel compelling in the moment. It is a theoretical framework, not a literal two-part brain map. Contemporary cognitive neuroscience describes interacting systems rather than a single self-control switch.


A person who pictures only the sensory pleasure of an immediate reward may experience a different conflict from someone who considers the full situation, alternative actions, and later consequences. The appropriate intervention depends on the goal: distraction might help with a brief wait; increasing trust or making a delayed benefit concrete may matter more when the central problem is uncertainty.


Executive functioning and goal knowledge


Working memory, cognitive flexibility, response inhibition, and attention can contribute to future-oriented behavior. Yet performance also depends on which goal is active, whether the child understands the instructions, and what they know about the social situation. Doebel's 2020 analysis argues that executive function develops through using control in the service of particular goals, supported by acquired beliefs, values, and knowledge. This helps explain why a laboratory score is an imperfect measure of a general, context-free capacity.


Trust, reliability, and credibility


Waiting is a wager on whether the promised outcome will appear. In a small experiment by Kidd, Palmeri, and Aslin, preschoolers who had experienced a reliable experimental environment waited substantially longer on a subsequent marshmallow task than children exposed to an unreliable one. The sample included 28 children, so the experiment is informative about a possible mechanism rather than an estimate of all children's behavior. Its central result was that beliefs about environmental reliability mattered.


For people facing unpredictable schedules, unmet promises, scarce resources, or unstable opportunities, an immediate benefit may offer greater certainty. A choice that looks impatient to an observer can reflect an informed evaluation of risk. This insight strengthens rather than weakens scientific analysis: behavior must be interpreted in the context of credible options.


What Was the Marshmallow Test?


In the best-known versions of the preschool experiments, a child was offered a smaller immediate treat or the possibility of receiving a larger reward after waiting. Researchers observed how long the child waited and which strategies appeared to help. Later studies examined associations between childhood waiting and adolescent or adult outcomes. The task became famous because early follow-up findings suggested that differences in waiting predicted later academic and behavioral measures.


The marshmallow task is a clever experimental window into a particular choice, with the situation deliberately simplified. It cannot capture a child's household conditions, long-term opportunities, classroom support, health, or every form of self-regulation. Researchers have also varied the age of participants, the reward, the visibility of the treat, the reliability of the adult, and the way outcomes are scored. For a full history of the original task, replications, and public misunderstandings, the separately owned EN27-28 article will address the marshmallow test in detail once published.


Does Delayed Gratification Predict Success Later in Life?


Early longitudinal findings and what they actually measured


The influential research program reported associations between preschool waiting and some later achievement and self-regulation indicators. Those observations supported questions about the developmental continuity of self-regulation, but an association between an early test and later outcomes does not establish that waiting itself caused the outcomes. Selection, family resources, early cognitive abilities, and social experiences can shape both the initial behavior and subsequent development.


The 2018 conceptual replication


Watts, Duncan, and Quan used a larger and more diverse sample than the original Stanford studies and investigated outcomes at age 15. Their 2018 study in Psychological Science found smaller associations with achievement than early reports; adjustment for family background, early cognitive ability, and home environment reduced the association substantially. Associations with many behavioral outcomes were small and rarely statistically significant. The strongest result was not a simple rule that each additional minute of waiting translated into a predictable advantage in later life.


A different analysis of the same data


Science advances through competing analyses of shared evidence. Michaelson and Munakata's preregistered 2020 secondary analysis found significant associations for three of five outcomes they examined when using analytic choices closer to the original research. Some relationships with adolescent problem behavior persisted across models. Their interpretation highlighted social support as an important explanation. These findings qualify broad claims that the replication entirely erased every predictive association, while reinforcing the point that early social context remains central.


What the 2024 adult follow-up found


Sperber, Vandell, Duncan, and Watts assessed 702 participants who had completed the marshmallow task around age four and reported measures at age 26. The preregistered 2024 study found that preschool waiting was not strongly predictive of adult achievement, health, or behavior. The sample and measurements impose their own limits, but the finding directly challenges claims that one preschool exercise functions as an accurate adult destiny test.


Taken together, these studies support a precise conclusion: observed delay may correlate with some later measures in some cohorts and models, yet its predictive power is context-dependent and does not establish a simple causal pathway from a longer wait to a successful adulthood. The research is strongest when focused on mechanisms and development, and weakest when converted into deterministic parenting slogans.


Why Family Resources and Social Conditions Matter


Growing up in a stable environment can change what a delayed promise means. Children who see adults keep commitments may have stronger reasons to expect that waiting pays off. Adequate food and other resources may also make giving up an immediate opportunity less costly. Social support can influence both how children perform on a waiting task and how they fare later, creating confounding pathways in longitudinal research.


A recent systematic review and meta-analysis by Felton and colleagues, published online in 2025, examined environmental disadvantage and delayed reward discounting among young people. Across 28 articles representing 20 unique samples, environmental risk showed small-to-medium associations with discounting, with stronger associations for more proximal instability indicators than for some broad socioeconomic measures. Because the outcome was delayed reward discounting, those findings should not be treated as a direct replication of the marshmallow waiting task. They nevertheless strengthen the rationale for examining opportunity and reliability alongside preferences.


It is also important to avoid an inverse stereotype. A lower-income family does not imply poor self-control, and an affluent setting does not ensure it. Group patterns are not diagnostic of individuals. Supportive environments, dependable commitments, and opportunities to make choices affect what future-oriented behavior can accomplish.


Is Delaying Gratification Always the Best Choice?


A longer wait improves a decision only when the delayed reward is worth the trade-off. Consider two offers: $25 today or $26 in a year, and $25 today or a reliably guaranteed $100 next week. The sensible choice may differ across situations and people. Immediate expenses, inflation, risk, interest, and personal needs are relevant. Calling every immediate choice an error mistakes a narrow experimental convention for a universal moral rule.


A choice to enjoy something now can fit long-term values. Rest after sustained work, time with friends, and affordable pleasures may support functioning and relationships. Excessive postponement of rewarding experiences can also undermine well-being. Self-regulation works by coordinating priorities over time, including the legitimate value of the present.


How Stress and Uncertainty Influence Waiting


Stress can alter attention, reward perception, and estimates of future safety, but the direction and size of effects vary by context and research method. Studies on chronic adversity, acute laboratory stress, and self-reported stress answer different questions. A person under pressure may place greater weight on certainty, yet that pattern should not be assumed for every stressful episode.


A 2024 systematic review and meta-analysis of acute stress and monetary delay discounting did not find a reliable overall effect of experimentally induced acute stress on monetary discounting. This is a useful corrective to the sweeping assertion that stress always makes people prefer immediate rewards. Chronic environmental instability and laboratory acute stress are not interchangeable exposures, and monetary tasks differ from visible-food waiting.


How Delayed Gratification Develops Across Childhood and Adolescence


Children acquire language, time concepts, memory for future events, goal understanding, and strategies for handling competing desires. These developments can expand their options for waiting. A very young child may experience ten minutes as an indefinite interval, while an older child may understand schedules and use learned strategies. The reliability of adult promises and the value of the reward also shape performance.


A child's observed waiting time reflects many features of a specific encounter. Age-based averages, where available, describe samples under specified conditions rather than standards that every child should meet. Parents and educators are better served by predictable routines and credible arrangements than by staging high-stakes tests of patience.


Norms and relationships also contribute. Developmental research has manipulated beliefs about how peers and groups wait and found that social information changes the value children attach to delayed outcomes. Such findings align with a broader perspective in which children learn which goals and behaviors matter in a community. They do not establish that pressure or comparison is an effective or appropriate general parenting intervention.


How to Improve Delayed Gratification in Everyday Life


Clarify the future reward and its actual value


Define the goal in concrete terms: what later benefit is expected, why it matters, and when it may arrive. An abstract instruction to be disciplined is less informative than a specific savings objective or a study plan tied to a real milestone. Verify that the future benefit is realistic, because learning to postpone gratification in pursuit of an unattainable promise can produce frustration rather than effective regulation.


Make commitments credible and reduce uncertainty


Use reliable reminders, calendars, automatic transfers, written plans, or clear agreements when appropriate. The objective is to make the delayed outcome predictable enough that waiting is a reasonable choice. For children, adults should consistently follow through on commitments. For adults, decisions can be improved by checking evidence, timelines, and competing obligations rather than relying solely on determination.


Manage cues before temptation becomes intense


The situational self-control literature recommends changing exposure to tempting cues when feasible. A student might put a phone in another room during concentrated work; someone setting aside money might automate part of a deposit; a person seeking better sleep might choose a stopping time for stimulating media. These are practical applications of a theoretically and empirically supported strategy family, with effects that depend on the exact behavior and environment. See Duckworth and colleagues' review.


Choose attention strategies suited to the task


For a brief unavoidable wait, looking away from the reward, shifting attention toward another activity, or considering less tempting features may reduce the immediate pull. Foundational experimental work supports the relevance of attention in specific laboratory conditions, but one technique will not solve all financial, learning, or interpersonal conflicts. A larger issue, such as an unreliable reward, requires addressing uncertainty instead.


Reduce the need for repeated difficult choices


Place useful choices into routines or supportive environments. A recurring savings transfer, a prepared study location, and predictable start times can reduce repeated conflict with immediate impulses. These tools draw on general self-control and behavior-change principles; the strength of direct evidence for each specific habit should be judged separately. Helpful routines gradually make goal pursuit less dependent on constant conscious inhibition.


Practice flexible judgment rather than maximizing waiting


Review outcomes after trying a strategy. Was the later benefit delivered? Did the waiting impose unexpected costs? Did changing context make the task easier? These questions support learning from experience. Successful self-regulation sometimes means persisting and sometimes means revising a plan whose assumptions have changed.


Practical Examples for Children, Students, and Adults


For parents and caregivers


Make future rewards credible and developmentally understandable. If a child is promised an activity after a task, fulfill that promise on the stated terms. Model a short wait with a clear timeline, provide age-appropriate choices, and emphasize predictable processes rather than comparing siblings or using a treat experiment as an intelligence or character test. Children learn from the opportunities and expectations surrounding them.


For students


Turn vague future outcomes into near-term, observable milestones. A student studying for a distant examination may benefit from a planned 25-minute work period, a predictable break, and reduced distractions. Such an arrangement changes the immediate costs and rewards of studying; it is not evidence that the student has a particular amount of innate willpower. For difficulties driven by task initiation or academic context, targeted supports matter more than moral exhortations.


For money decisions


Clarify the time horizon, available liquidity, expected return, and reliability of the outcome. An automated transfer can support a savings goal when essential needs are already covered. When current necessities are urgent, taking a smaller immediate benefit can be rational. Laboratory delay discounting scores are not personal financial advice, and ordinary differences in intertemporal preference should not be pathologized.


For digital behavior


Mobile apps and media offer frequent immediate rewards with low entry costs. People can protect intended future activities by muting nonessential alerts, creating device-free work periods, or moving tempting apps away from the most convenient positions. Design features and individual circumstances matter; the issue is better understood as a behavioral and environmental interaction than a simple failure of restraint. Specialized digital-behavior articles provide the appropriate deeper treatment.


The Limits of Measuring Delayed Gratification


Measurement validity depends on the distinction between a construct and its indicator. Time spent waiting for food, a hypothetical monetary choice, a computerized inhibition task, and an observer's rating do not automatically measure the same thing. Even where they correlate, disagreement between methods can be theoretically informative. Researchers must ask whether a measure reflects reward valuation, ability to maintain a goal, confidence in the promised reward, or a combination.


Experimental conditions matter. Reward type, time horizon, instruction clarity, social presence, prior reliability, age, and the analysis of very short versus long waits can influence findings. Cohort composition and attrition affect longitudinal interpretations. For causal claims, the critical question is whether changing delay ability itself changes later outcomes, a stronger proposition than showing that a childhood score predicts a later measure.


Publication bias, researcher flexibility, and selective popular coverage can make an elegant story appear more settled than the underlying evidence. The 2018 and 2020 analyses of related data demonstrate why model selection and outcome definitions need to be described transparently. The later adult follow-up adds a longer horizon that challenges strong predictive narratives. Evidence improves when findings from different tasks, samples, and analysis plans converge.


Clinical Considerations: When Difficulty Waiting May Matter


Difficulties weighing long-term consequences can arise with sleep deprivation, stress, developmental differences, executive-function challenges, or mental-health symptoms. They also occur in ordinary life without a disorder. A person who often selects a short-term reward has not thereby demonstrated ADHD, depression, a substance-use disorder, or any other diagnosis. Clinical assessment considers patterns across settings, persistence, impairment, developmental history, and other explanations.


ADHD research includes reward processing and impulsive choice, but its diagnosis depends on established clinical criteria, not a marshmallow test or an isolated self-control score. Depression and anhedonia concern different constellations of mood, motivation, pleasure, and impairment. Persistent compulsions and addictive behavior also require specific clinical frameworks. When problems cause substantial and ongoing impairment, a qualified professional can evaluate the larger pattern and help identify supports.


Common Myths About Delayed Gratification


Myth: The marshmallow test predicts whether a child will succeed


Longitudinal research does not support using a single preschool waiting time as a precise individual forecast. The 2018 conceptual replication found attenuated associations after adjustment, and the 2024 adult follow-up found weak prediction of adult functioning. Certain group-level associations remain scientifically interesting, but individual destiny cannot be read from an afternoon with a treat.


Myth: Waiting longer always shows greater strength of character


Waiting sometimes reflects a well-supported goal and sometimes reflects high confidence in a promise, low immediate need, or a task-specific attention strategy. People facing uncertainty can have good reasons to choose what is available now. Treating every choice as a moral ranking overlooks the variables the experiment is meant to reveal.


Myth: Willpower is a finite substance that gets used up


The metaphor of willpower as an exhaustible resource is associated with the ego-depletion hypothesis, which has faced substantial replication challenges. This theory is a separate question from whether people can delay gratification in particular situations. The evidence for delayed gratification does not establish a literal, measurable internal tank of willpower.


Myth: A person who delays gratification will always be happier


Well-being includes immediate enjoyment, social connection, sleep, health, material security, and meaningful longer-term pursuits. Delayed gratification can serve some goals, but persistent deprivation can undermine others. A useful choice integrates multiple needs instead of maximizing the duration of waiting.


Frequently Asked Questions


What does delayed gratification mean in simple terms?


It means choosing to wait for a later benefit instead of taking an available reward immediately, when waiting serves a goal that matters to the person. Examples include saving for an emergency, practicing a skill, and setting aside a tempting distraction during focused work.


Is delayed gratification the same as self-control?


No. Delaying gratification is one way self-control can be expressed. Self-control also includes making plans, selecting environments, redirecting attention, and adjusting actions when competing impulses appear. The decision to wait depends on trust and opportunity in addition to control processes.


What is the difference between delayed gratification and delay discounting?


Delayed gratification usually describes postponing an immediately available benefit for a later reward, often while temptation remains present. Delay discounting describes how the subjective value of rewards decreases as delivery is postponed, commonly measured through repeated intertemporal choices. They overlap conceptually but are not identical measures.


What does the marshmallow test actually show?


It shows how children respond to a particular trade-off under specified experimental conditions. It has informed research on attention, cognition, social expectations, and later correlates, but the results cannot be interpreted as a stand-alone test of lifelong character, intelligence, or future success.


Does the marshmallow test predict adult success?


The evidence does not support a strong, general prediction. Later studies found that adjustment for background characteristics reduced many associations, while a 2024 preregistered follow-up found weak prediction of adult achievement, health, and behavior. Some narrower associations depend on outcome and analytical approach.


Why can some people wait longer than others?


Differences in goal value, age, attention, reward preferences, past experiences, trust, resource availability, and the setting can all play a role. There is no basis for assigning every difference to a single level of willpower.


Can delayed gratification be improved?


People can often make future-oriented actions easier through reliable commitments, cue management, concrete goals, and situational strategies. Evidence supports several underlying mechanisms, but improvement depends on the task and context; there is no established universal training exercise that guarantees broad success in unrelated areas.


Is delayed gratification always healthy?


It can support worthwhile longer-term goals when the eventual benefit is realistic. Choosing an immediate need or enjoyment can also be appropriate. The balance should reflect actual circumstances and values rather than a rule that postponement is always superior.


Is poor delayed gratification a sign of ADHD or depression?


Not on its own. Both conditions have established diagnostic criteria and involve broader patterns of symptoms and impairment. A single preference for immediate rewards or a laboratory score is insufficient for diagnosis.


How does poverty or instability affect delayed gratification?


Environmental uncertainty can change what waiting is expected to achieve. Research on environmental reliability and youth delay discounting shows why stable opportunities and credible promises matter. It does not imply that socioeconomic status determines any individual's self-control.


What the Research Supports


The most defensible conclusion is that delaying gratification is a context-dependent form of future-oriented choice shaped by attention, goals, anticipated value, social experience, and the credibility of later outcomes. Foundational studies show how cognitive and attentional strategies influence waiting in specific conditions. Longitudinal evidence is mixed and considerably less deterministic than famous popular accounts suggest. Recent evidence on environmental disadvantage and adult follow-up reinforces the importance of examining context rather than labeling individuals.


Useful applications focus on making valued future outcomes attainable, reducing unnecessary temptation, and designing situations that support thoughtful choice. Psychological science supplies mechanisms and constraints for these decisions; it does not turn every act of waiting into a prediction of character or success.


Related Articles


Motivation, Habits, and Self-Control: Psychology of Behavior Change provides the EN-27 overview. What Is Self-Control? Psychology, Mechanisms, and Examples examines the broader construct. How to Improve Self-Control: Evidence-Based Strategies develops practical situational and regulatory approaches.



For the environmental and timing mechanisms behind proactive control, see Situational Self-Control: How Environment and Timing Shape Choices.


The Marshmallow Test: What It Shows About Self-Control — the original experiments, replications, contextual findings, and limits of predicting later success.



References


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Duckworth, A. L., Gendler, T. S., & Gross, J. J. (2016). Situational strategies for self-control. Perspectives on Psychological Science, 11(1), 35–55. https://doi.org/10.1177/1745691615623247


Felton, J. W., et al. (2025, online publication). A systematic review and meta-analysis of the impact of environmental disadvantage on youth delayed reward discounting. Development and Psychopathology. https://doi.org/10.1017/S0954579425100886


Forbes, P. A. G., Nitschke, J. P., & Hochmeister, N. (2024). No effects of acute stress on monetary delay discounting: A systematic literature review and meta-analysis. Neurobiology of Stress, 31, 100653. https://doi.org/10.1016/j.ynstr.2024.100653


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Michaelson, L. E., & Munakata, Y. (2020). Same data set, different conclusions: Preschool delay of gratification predicts later behavioral outcomes in a preregistered study. Psychological Science, 31(2), 193–201. https://doi.org/10.1177/0956797619896270


Mischel, W., Ebbesen, E. B., & Zeiss, A. R. (1972). Cognitive and attentional mechanisms in delay of gratification. Journal of Personality and Social Psychology, 21(2), 204–218. https://doi.org/10.1037/h0032198


Mischel, W., Shoda, Y., & Rodriguez, M. I. (1989). Delay of gratification in children. Science, 244(4907), 933–938. https://doi.org/10.1126/science.2658056


Sperber, J. F., Vandell, D. L., Duncan, G. J., & Watts, T. W. (2024). Delay of gratification and adult outcomes: The Marshmallow Test does not reliably predict adult functioning. Child Development, 95(6), 2015–2029. https://doi.org/10.1111/cdev.14129


Watts, T. W., Duncan, G. J., & Quan, H. (2018). Revisiting the Marshmallow Test: A conceptual replication investigating links between early delay of gratification and later outcomes. Psychological Science, 29(7), 1159–1177. https://doi.org/10.1177/0956797618761661

 
 
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