Cognitive Connie
What is socioemotional development?
Toddlerhood — roughly the second and third years of life — is defined by the emergence of self-awareness and with it an entirely new class of emotions. From around 18 months, as toddlers begin to recognise themselves in mirrors and photographs (indexed by the rouge test), they become capable of self-conscious emotions — pride, shame, embarrassment, and guilt — that require a representation of the self and awareness of social standards. These emotions are uniquely powerful and precarious: a toddler's pride at a successful tower of blocks and a toddler's collapse into shame at a perceived failure are both expressions of a self that has become, for the first time, an object of evaluation.
Defining features
Key figures
Erik Erikson
1902–1994Psychoanalyst and developmental theorist whose eight-stage model of psychosocial development placed the toddler years under the "autonomy versus shame and doubt" conflict. Erikson's contribution was to situate individual development within a social context, showing how the caregiver's and culture's response to the child's autonomous strivings shapes character. His theory remains the dominant life-span framework in textbooks despite limited direct empirical testing.
Jerome Kagan
1929–2021Harvard developmental psychologist whose longitudinal research identified behavioural inhibition in toddlerhood — a stable temperamental pattern of reticence, physiological reactivity, and wariness in novel social situations — as a risk factor for later anxiety disorders. Kagan showed that inhibition at 14–21 months predicted anxious, avoidant behaviour at school age and beyond, establishing temperament as a longitudinally meaningful individual difference dimension.
Michael Lewis
1937–presentRutgers developmental psychologist who provided the most systematic account of the emergence of self-conscious emotions, linking them to the development of objective self-awareness (measured by the rouge test). His work on shame versus guilt — shame attacking the global self, guilt focused on specific behaviour — has been highly influential in clinical psychology and developmental research.
Key concepts
Objective self-awareness
The capacity to recognise oneself as a distinct entity that can be observed and evaluated by others — and eventually by oneself. Indexed in toddlerhood by the rouge test (mirror self-recognition), which typically passes at 18–24 months. Objective self-awareness is the necessary precondition for self-conscious emotions (shame, guilt, pride, embarrassment), as these emotions require evaluating the self against a standard.
Self-conscious emotions
A class of emotions — shame, guilt, pride, embarrassment, and jealousy — that require self-awareness, knowledge of social standards or expectations, and evaluation of the self against those standards. They emerge in the second year as objective self-awareness develops. Unlike primary emotions (fear, joy), self-conscious emotions are not universal in their elicitors or expression — they depend on culturally specific standards for what constitutes success, failure, or transgression.
Autonomy versus shame and doubt
Erikson's second psychosocial stage (approximately 1–3 years), in which the central conflict is between the toddler's emerging drive for autonomous self-direction and the risk of shame (when autonomy is shamed or punished) or doubt (when the child cannot trust their own judgment). Successful resolution produces will — the capacity to exercise autonomous choice within the limits of social expectations. Unsuccessful resolution leaves a legacy of shame and self-doubt that can undermine confidence across later stages.
Parallel play
A form of play (most common at 18–24 months) in which toddlers play alongside one another, using similar materials and occupying the same space, without coordinating their activities or directly interacting. Parten (1932) described it as a transitional form between solitary play and true associative and cooperative play. Contemporary research suggests toddlers in parallel play are more socially aware than they appear — they monitor each other, imitate, and engage in brief interactions.
Emotional regulation in toddlerhood
Regulation shifts from primarily external (caregiver-mediated) in infancy toward emerging self-regulatory capacity in toddlerhood, though external scaffolding remains essential. Toddlers begin to use strategies like distraction, object comfort, and physical withdrawal. Temper tantrums — most frequent between 18 months and 3 years — reflect the gap between intensely felt emotional states and limited regulatory capacity. Language development, which accelerates sharply in the second year, provides a powerful new regulatory tool: labelling and talking about emotions reduces their intensity.
Test your knowledge
Frequently asked questions
When do self-conscious emotions emerge and why then?+
Self-conscious emotions — shame, guilt, pride, and embarrassment — emerge at approximately 18–24 months, contingent on the development of objective self-awareness. Before this, infants have primary emotions (fear, joy, anger) but cannot feel shame or pride because these require a self that can be evaluated. The rouge test marks the milestone: once a toddler recognises themselves in a mirror, they have a representation of themselves as an object in the world that can be judged against standards. The cultural standards that determine what occasions shame or pride are transmitted by caregivers from the second year onward.
What is the significance of temper tantrums?+
Temper tantrums — intense, dysregulated emotional outbursts — are most frequent between 18 months and 3 years and represent the gap between the intensity of toddler emotional experience and their still-limited regulatory capacity. They are not simply wilful defiance: the toddler's prefrontal cortex is still immature, language capacity is expanding but limited, and the drive for autonomy produces frequent conflicts with caregiver limits. Tantrums tend to decrease naturally as language, regulatory capacity, and social understanding develop. How caregivers respond — with calm limit-setting versus harsh punishment or inconsistency — significantly shapes the developmental trajectory of emotional regulation.
Sources
Last reviewed August 2026- 1.
Lewis, M., Sullivan, M. W., Stanger, C., & Weiss, M. (1989). Self development and self-conscious emotions. Child Development, 60(1), 146–156.
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Empirical study linking the onset of self-recognition (rouge test) to the emergence of self-conscious emotions in toddlerhood.
- 2.
Kagan, J. (1994). Galen's Prophecy: Temperament in Human Nature. Basic Books.
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Kagan's synthesis of his longitudinal research on behavioural inhibition and its developmental significance.
- 3.
Erikson, E. H. (1950). Childhood and Society. Norton.
+About this source
Original statement of Erikson's eight-stage model, including the autonomy versus shame and doubt stage of toddlerhood.