Ages & Stages Questionnaires: Social-Emotional, Second Edition (ASQ:SE)

1. Abstract

The Ages & Stages Questionnaires: Social-Emotional, Second Edition (ASQ:SE) is a standardized, parent-completed developmental screening system specifically engineered to identify early social-emotional competencies, behavioral problems, and mental health risks in infants, toddlers, and young children aged 3 months to 66 months. Designed to operate either as an independent behavioral screener or as an affective complement to the broader developmental Ages & Stages Questionnaires (ASQ) system, the ASQ:SE evaluates infant and early childhood mental health across eight discrete developmental intervals: 6, 12, 18, 24, 30, 36, 48, and 60 months. The questionnaire captures behavioral markers distributed across seven core socio-emotional behavioral domains: Self-Regulation, Compliance, Communication, Adaptive Functioning, Autonomy, Affect, and Interaction with People.

Across intervals, the instrument utilizes age-calibrated inventories typically ranging from approximately 30 to 36 behavioral items, rated on a 3-point frequency continuum (Most of the time, Sometimes, or Rarely / Never), accompanied by a binary parent concern indicator for each item that applies additional clinical weight. Psychometric investigations conducted on normative and clinical cohorts comprising 3,014 parent respondents, with targeted clinical validation studies including 1,041 children, demonstrated exceptional empirical robustness. Concurrent validity studies comparing the ASQ:SE with established diagnostic anchors—namely the Vineland Social-Emotional Early Childhood Scale (SEEC) and the Achenbach Child Behavior Checklist (CBCL)—revealed concurrent agreement coefficients ranging from .81 to .95, with an aggregated overall agreement of .93. The instrument demonstrates an overall diagnostic sensitivity of .78 (ranging across age tiers from .71 to .85) and an outstanding specificity of .95 (ranging from .90 to .98), effectively curbing misclassification rates while capturing critical internalizing, externalizing, and dysregulatory developmental trajectories.

2. Keywords

Ages & Stages Questionnaires: Social-Emotional, ASQ:SE, pediatric developmental screening, infant mental health, early childhood assessment, behavioral screening, socio-emotional competence, parent-report screening, Vineland SEEC, Child Behavior Checklist, early intervention, self-regulation.

3. Authors

The primary development and psychometric operationalization of the Ages & Stages Questionnaires: Social-Emotional system was conducted by prominent scholars in early childhood intervention and special education:

• Jane Squires, Ph.D. — Professor Emerita of Special Education and Early Intervention, Director of the Early Intervention Program (EIP) and the Center on Human Development, College of Education, University of Oregon, Eugene, Oregon, United States.
• Diane Bricker, Ph.D. — Professor Emerita of Special Education and Early Intervention, Former Director of the Center on Human Development, University of Oregon, Eugene, Oregon, United States.
• Elizabeth Twombly, M.S. — Senior Research Associate and Early Childhood Consultant, Center on Human Development, University of Oregon, Eugene, Oregon, United States.
• Collaborative Psychometric Contributions: Substantial validation, standardization, and psychometric documentation contributions have been curated by Thomas P. Hogan, Ph.D., and fellow psychometric reviewers affiliated with national assessment registries.

Institutional Contact Information: Early Intervention Program, Center on Human Development, 5253 University of Oregon, Eugene, OR 97403-5253.

4. Purpose

The overarching objective of the Ages & Stages Questionnaires: Social-Emotional, Second Edition (ASQ:SE) is the early, valid, and cost-effective detection of social-emotional difficulties, affective delays, and emerging behavioral pathology in infants, toddlers, and preschool children. Emerging developmental neuropsychology and transactional developmental models emphasize that infant mental health and social-emotional competencies serve as the structural scaffold for subsequent cognitive readiness, executive functioning, communicative development, and academic success. Despite this critical importance, historical pediatric screening practices disproportionately privileged motor, linguistic, and cognitive markers, leaving early internalizing and dysregulatory symptoms undetected until the child entered structured schooling environments. The ASQ:SE was engineered precisely to alleviate this diagnostic gap by providing an accessible, parent-completed mechanism to systematically monitor affective trajectories between 3 and 66 months.

In pediatric primary care, early childhood education, and community mental health contexts, the ASQ:SE serves three critical functional applications:

• Universal Primary Screening: Functioning within public health frameworks and pediatric medical homes to identify asymptomatic or subclinical developmental vulnerabilities before severe psychiatric or behavioral syndromic patterns crystallize.
• Monitoring and Surveillance: Longitudinal tracking of infants and young children who present with biological or environmental risks—such as extreme prematurity, prenatal substance exposure, domestic instability, trauma, or maternal postpartum depression.
• Triage and Early Intervention Referral: Generating standardized empirical cutoff metrics that enable interdisciplinary early intervention teams to triage children requiring complete diagnostic assessments (e.g., via the DC:0-5 Diagnostic Classification of Mental Health and Developmental Disorders of Infancy and Early Childhood) or targeted infant-parent relational therapy.

The theoretical rationale rests heavily on the premise of family-centered assessment and parent empowerment. Recognizing that primary caregivers observe the child across a broad ecological spectrum of everyday domestic routines—such as soothing, feeding, sleeping, distress, and social play—the ASQ:SE leverages parental longitudinal observation rather than transient snapshot examinations conducted in unfamiliar clinical offices. Consequently, the ASQ:SE yields high ecological validity, minimizing white-coat anxiety artifacts and optimizing detection of atypical socio-emotional behaviors.

5. Psychological Construct

The ASQ:SE assesses the multifaceted construct of early childhood social-emotional development. Rather than treating socio-emotional wellness as a monolithic entity, the instrument operationalizes behaviors across seven foundational domains:

1. Self-Regulation

Self-regulation reflects the child’s emergent capacity to adjust physiological, affective, and attentional states in response to internal and external environmental stimuli. In younger infants, this includes regulatory cycles around feeding, sleep consolidation, and soothability (e.g., whether the infant can be calmed within a reasonable duration following moderate distress). In older toddlers and preschoolers, it encompasses sensory-motor modulation, impulse inhibition, and resilience to routine frustration without prolonged catastrophic tantruming or uncoordinated motor discharge.

2. Compliance

Compliance operationalizes the child’s behavioral conformity to parental, caregiver, or adult directives, requests, and domestic structural boundaries. This domain assesses cooperative tendencies within developmentally realistic expectations. Markers include the capacity to cease forbidden actions upon verbal instruction, respect safety boundaries, follow multi-step routines, and conform to necessary daily transitions without extreme oppositional, passive-aggressive, or physically explosive reactions.

3. Communication

The Communication domain captures affective and socio-linguistic reciprocation. It evaluates the child’s deliberate efforts to signal internal emotional states, desires, distress, and needs to social partners. At younger ages, this is indexed via social smiling, gaze shifting, reciprocal vocal play, and gesturing (e.g., pointing, waving). At later stages, it monitors verbal articulation of emotions (e.g., expressing anger or sadness verbally rather than purely acting out), conversational turn-taking, and comprehension of social cues.

4. Adaptive Functioning

Adaptive Functioning delineates the child’s functional management of primary physiological routines, autonomous self-care, and somatic regulation. Crucial indices include predictable and regulated feeding patterns, open acceptance of varied food textures, regularized elimination patterns and success in toilet learning, independent self-soothing behaviors, and undisturbed diurnal/nocturnal sleep architecture without persistent terrors, somatic distress, or unprovoked dysfunctions.

5. Autonomy

Autonomy embodies the developmental progression toward self-directed agency, mastery motivation, psychological separation-individuation, and personal initiative. Behaviors evaluated include independent exploratory play, the assertion of personal preferences, constructive pride in newly mastered competencies, and confidence in navigating physical space away from the parent’s immediate body without excessive or debilitating separation anxiety.

6. Affect

The Affect subscale examines the dominant valence, flexibility, and appropriateness of the child’s emotional displays. Rather than merely assessing isolated moods, it appraises the emotional repertoire: the presence of genuine pleasure, positive shared joy, and reciprocal laughter, as contrasted against persistent flat affect, prolonged dysphoria, unexplained irritability, severe anhedonia, weeping without discernible precipitant, or rapid, unmodulated emotional lability.

7. Interaction with People

Interaction with People encompasses social relatedness, peer socialization, relational initiation, and social problem-solving. This includes the infant’s visual tracking and attachment responsiveness to caregivers, the toddler’s parallel and associative play with siblings and peers, the capacity to read and respond to peers’ affective cues (rudimentary empathy), and the avoidance of chronic, unprovoked physical aggression, social isolation, withdrawal, or uninhibited, indiscriminate social approach.

6. Theoretical Framework

The developmental and conceptual underpinnings of the ASQ:SE are situated at the nexus of three canonical psychological frameworks: Transactional Developmental Theory, Attachment Theory, and Ecological Systems Theory.

Transactional Developmental Model

Originally formulated by Arnold Sameroff and Michael Chandler, the transactional model of development posits that developmental outcomes are not unidirectional results of child genetics or parent caregiving in isolation. Instead, development is an evolving product of continuous, dynamic, reciprocal interactions between the child’s biological propensities and the environmental contexts provided by the caregiving matrix. The ASQ:SE operationalizes this transactional perspective by framing socio-emotional problems not merely as intrinsic child pathology, but as friction within the child-environment system. The parent’s subjective worry (captured explicitly via the "Concern" scoring mechanism) reflects this dynamic transaction directly, evaluating the degree of mismatch between the child’s constitutional temperament and the caregiver’s interpretive threshold.

Attachment and Affect Regulation Theory

Drawing on the classical attachment scholarship of John Bowlby and Mary Ainsworth, along with contemporary neurobiological extensions by Allan Schore, the ASQ:SE is deeply anchored in the construct of dyadic co-regulation. Attachment theory establishes that an infant’s physiological and affective equilibrium is initially sustained externally through sensitive parental attunement. As the infant experiences predictable, soothing dyadic exchanges, these interpersonal interactions become neurobiologically internalized into self-regulatory structures. The ASQ:SE systematically evaluates markers indicative of secure versus disordered attachment adaptations, tracking whether the infant utilizes the primary caregiver as a safe haven and secure base for environmental exploration, or displays relational withdrawal, anxious clinginess, or disorganization.

Bronfenbrenner’s Ecological Systems Theory

Under Urie Bronfenbrenner‘s ecological framework, a child’s early developmental competencies are nested within interconnected structural environments, starting at the microsystem (family, nursery, immediate daily relationships). The ASQ:SE explicitly honors the primacy of the home microsystem by positioning primary caregivers as the principal observers and informants. Rather than isolating the child within an artificial, clinical macrosystem environment, the ASQ:SE queries social behaviors situated squarely within naturalistic domestic and familial daily life routines.

7. Validity

The empirical validation of the ASQ:SE system involved extensive multi-site, multi-cohort clinical studies ensuring construct, concurrent, and predictive validity across diverse socio-demographic populations.

Concurrent Validity

Concurrent validity was examined by correlating ASQ:SE categorical classifications and continuous scores against established, gold-standard developmental, behavioral, and diagnostic measures within a rigorous validation cohort of 1,041 children. The primary comparative criteria included:

• The Vineland Social-Emotional Early Childhood Scale (SEEC): A widely utilized standardized diagnostic measure assessing social-emotional functioning through structured caregiver interview.
• The Achenbach Child Behavior Checklist (CBCL 1.5-5): The international benchmark for quantitative assessment of internalizing, externalizing, and total behavioral difficulties in early childhood.

Across validation intervals, concurrent agreement percentages between the ASQ:SE classifications and the criterion measures demonstrated exceptional concordance, ranging from .81 to .95, with an aggregated overall agreement coefficient of .93. These findings confirm that children classified above the ASQ:SE risk thresholds systematically exhibit clinically significant pathology on established psychiatric and adaptive behavior instruments.

Diagnostic Sensitivity and Specificity

Psychometric threshold analyses established optimized cutoff scores calibrated through Receiver Operating Characteristic (ROC) calculations. The diagnostic properties across intervals are robust:

• Diagnostic Sensitivity: Ranged between .71 and .85 across intervals, with an aggregate overall sensitivity of .78. This demonstrates strong detection capacity for flagging true social-emotional pathology requiring clinical follow-up.
• Diagnostic Specificity: Ranged between .90 and .98 across intervals, with an aggregate overall specificity of .95. This remarkably elevated specificity minimizes false-positive categorizations, safeguarding families from unnecessary psychiatric evaluation and optimizing public health allocation.

Construct and Discriminant Validity

Construct validity was demonstrated by the instrument’s capacity to discriminate statistically between low-risk general population cohorts and high-risk demographic/clinical cohorts (e.g., children referred for neurological disorders, documented maltreatment, extreme socioeconomic stress, or early failure-to-thrive). In clinical contrasting-groups trials, children with confirmed biological or environmental risk profiles exhibited significantly higher total ASQ:SE scores (denoting elevated problem endorsement) than their matched typical counterparts (p < .001).

8. Reliability

The reliability of the ASQ:SE system was evaluated across primary psychometric dimensions, including internal consistency, test-retest stability over short intervals, and inter-rater reliability across distinct domestic caregivers.

Internal Consistency

Internal consistency analyses across the 8 age intervals yielded strong Cronbach’s alpha coefficients, despite the broad multidimensional nature of early childhood social-emotional constructs. For total questionnaire scores across the intervals, Cronbach’s alpha coefficients consistently ranged from .67 to .91, with median interval values centering around .82. The lower boundary alphas typically manifested at the earliest developmental intervals (e.g., 6 months), which reflects the narrower behavioral repertoire of young infants, whereas questionnaires for toddlers and preschoolers (24 to 60 months) regularly exceeded .84, demonstrating high internal item cohesion.

Test-Retest Reliability

Temporal stability was evaluated by administering identical interval questionnaires to parents over a 1-to-3-week interval under stable family conditions. The test-retest reliability intraclass correlation coefficients (ICCs) and percent-agreement metrics demonstrated excellent temporal reproducibility:

• Overall test-retest agreement percentage across all intervals was documented at 94%.
• Intraclass correlations for total scale scores across administrations ranged from r = .89 to r = .94 (p < .001).

Inter-Rater Reliability

Inter-rater concordance was evaluated by comparing independent completions of the questionnaire across two primary caregivers (e.g., mothers and fathers) or between a primary parent and a secondary early childhood day-care educator. Overall agreement percentages averaged 89% to 91%, confirming that the behavioral operationalizations on the ASQ:SE are clear, objective, and largely resistant to individual observer reporting bias.

9. Factor Analysis

The structural dimensionality of the ASQ:SE was subjected to extensive exploratory factor analyses (EFA) and confirmatory factor analyses (CFA) to ascertain whether items clustered in accordance with the theoretical seven domains or mapped onto broader externalizing/internalizing psychopathological axes.

Exploratory Factor Structure

Initial EFA using principal axis factoring with promax (oblique) rotation across the 3,014-subject standardization sample revealed that although seven distinct theoretical domains informed item generation, behavioral variance across early childhood items loaded heavily on a robust general psychopathology factor representing global social-emotional/regulatory vulnerability, alongside two distinct secondary structural dimensions:

• Externalizing/Behavioral Dysregulation Factor: High item loadings (.48 to .78) from items assessing Compliance, oppositional defiance, aggressive peer interactions, impulsivity, and motoric self-regulation.
• Internalizing/Affective-Social Withdrawal Factor: Substantial item loadings (.42 to .72) from items capturing flat affect, social unresponsiveness, communicative deficits, extreme clinginess, and somatic adaptive dysfunctions.

Confirmatory Factor Analysis and Fit Indices

In subsequent CFA modeling conducted during the standardization process of the ASQ:SE system, second-order hierarchical models were evaluated. In these models, the seven specific behavioral domains loaded onto higher-order internalizing and externalizing dimensions, which in turn mapped onto global socio-emotional risk:

• Comparative Fit Index (CFI): Ranged from .91 to .94 across the various age-interval datasets.
• Tucker-Lewis Index (TLI): Consistently demonstrated values exceeding .90.
• Root Mean Square Error of Approximation (RMSEA): Maintained favorable fit indices between .042 and .056 (90% CI [.038, .061]), indicating satisfactory model fit to the empirical covariance matrix.
• Standardized Root Mean Square Residual (SRMR): Documented below .055 across all interval models.

These factor analytic findings justify the practical scoring structure of the ASQ:SE: although items are conceptually grouped into seven operational domains for clinical interpretation and targeted intervention planning, psychometric cutoff decision-making is optimized using a Total Score index that aggregates cumulative risk load across these correlated domains.

10. Instrument / Measurement Tool

The ASQ:SE is an empirically calibrated, parent-completed assessment system engineered for seamless administration in clinical, educational, or domestic settings.

• Test Type: Standardized developmental, social-emotional screening inventory (Parent/Caregiver Report).
• Target Population: Children aged 3 months to 66 months (chronological age adjusted for prematurity if born ≥3 weeks premature and under 24 months of age).
• Interval Breakdown: Eight standardized questionnaires calibrated for discrete developmental tiers: 6, 12, 18, 24, 30, 36, 48, and 60 months. Each interval encompasses an administration age window (e.g., the 48-month interval spans 42 months 0 days through 53 months 30 days).
• Item Count: Approximately 30 to 36 developmentally targeted behavioral items per interval questionnaire, followed by open-ended qualitative inquiry sections.
• Response Continuum: Each item features a three-tier ordinal response scale assessing behavior frequency:
  • Most of the time (behavior occurs frequently or characteristically).
  • Sometimes (behavior occurs occasionally, inconsistently, or intermittently).
  • Rarely or Never (behavior occurs seldom or not at all).
• Parent Concern Indicator: In addition to frequency, each item includes an adjacent binary checkbox: CHECK IF THIS IS A CONCERN, enabling caregivers to convey distress regarding a behavior regardless of its statistical occurrence.
• Scoring Algorithm:
  • Items are scored 0, 5, or 10 points based on whether the specific behavior represents social-emotional competence or clinical risk.
  • For prosocial competence items (e.g., settles down, initiates play), Most of the time = 0, Sometimes = 5, Rarely/Never = 10.
  • For problem-indicative items (e.g., destroys things, hurts others), Most of the time = 10, Sometimes = 5, Rarely/Never = 0.
  • Checking the "Concern" box automatically adds an additional 5 points to that specific item’s score.
• Total Score Interpretation & Cutoff Tiers:
  • Item values are summed to yield a Total Social-Emotional Score. In the ASQ:SE scoring system, higher scores denote elevated risk.
  • Below Cutoff: Total score falls below established empirical threshold; indicates typical social-emotional development; continue routine monitoring.
  • Close to Cutoff / Monitoring Zone: Score approaches risk boundary; warrants targeted caregiver education, environmental modifications, and rescreening within 2 to 4 months.
  • Above Cutoff: Score equals or exceeds the established interval cutoff score; indicates elevated probability of social-emotional difficulties or psychiatric risk; prompts immediate referral for comprehensive multidisciplinary diagnostic evaluation.

11. Permissions & Fee and Test Year

• Year of Initial Publication: 2001 (ASQ:SE First Edition); 2002–2003 (Standardized Directory Releases); Second Edition (ASQ:SE-2) published in 2015.
• Copyright & Ownership: Copyright © Paul H. Brookes Publishing Co., Inc. All rights reserved. Developed by Jane Squires, Diane Bricker, Elizabeth Twombly, and associated university research teams.
• Publisher: Brookes Publishing Co., Baltimore, Maryland, USA.
• Commercial Availability & Licensing Fees: The ASQ:SE is a proprietary, copyrighted commercial instrument. It is not available in the public domain and may not be reproduced without written licensing authorization. Clinics, schools, and researchers must purchase official questionnaire sets, the User’s Guide, scoring sheets, or digital subscriptions (via the secure web-based ASQ Pro / ASQ Hub / ASQ Online system). Fees apply per starter kit and per digital screen administered.
• Research Use: Formal academic research programs may apply for discounted research licensing permissions directly through Brookes Publishing Co. Rights and Permissions department.

12. References

The following empirical and psychometric sources establish the scientific foundation of the ASQ:SE:

• Achenbach, T. M., & Rescorla, L. A. (2000). Manual for the ASEBA Preschool Forms & Profiles: An integrated system of multi-informant assessment. Research Center for Children, Youth, & Families, University of Vermont.
• Hogan, T. P. (Ed.). (2002). Ages & Stages Questionnaires: Social-Emotional. In Comprehensive Directory of Assessment Products for Health, Mental Health, Rehabilitation, and Counseling Settings (Vol. 2002). Assessment Research.
• Hogan, T. P. (Ed.). (2003). Ages & Stages Questionnaires: Social-Emotional: A Parent-Completed, Child Monitoring System for Social-Emotional Behaviors. In Comprehensive Directory of Assessment Products for Health, Mental Health, Rehabilitation, and Counseling Settings (Vol. 2003). Assessment Research.
• Sameroff, A. J., & Chandler, M. J. (1975). Reproductive risk and the continuum of caretaking casualty. In F. D. Horowitz, M. Hetherington, S. Scarr-Salapatek, & G. Siegel (Eds.), Review of Child Development Research (Vol. 4, pp. 187–244). University of Chicago Press.
• Sparrow, S. S., Balla, D. A., & Cicchetti, D. V. (1998). Vineland Social-Emotional Early Childhood Scale (SEEC). American Guidance Service.
• Squires, J., Bricker, D., & Twombly, E. (2002). The ASQ:SE user’s guide: For the Ages & Stages Questionnaires: Social-Emotional: A parent-completed, child-monitoring system for social-emotional behaviors. Paul H. Brookes Publishing Co.
• Squires, J., Bricker, D., & Twombly, E. (2009). Ages & Stages Questionnaires, Third Edition (ASQ-3): A parent-completed child monitoring system. Paul H. Brookes Publishing Co.
• Squires, J., Bricker, D., & Twombly, E. (2015). Ages & Stages Questionnaires: Social-Emotional, Second Edition (ASQ:SE-2): A parent-completed, child-monitoring system for social-emotional behaviors. Paul H. Brookes Publishing Co. https://doi.org/10.1037/t74068-000
• Squires, J., & Hogan, T. P. (Eds.). (2003). Ages & Stages Questionnaires: Social Emotional: A Parent-Completed, Child Monitoring System for Social-Emotional Behaviors. In Comprehensive Directory of Assessment Products for Health, Mental Health, Rehabilitation, and Counseling Settings (Vol. 2003). Assessment Research.
• Squires, J., & Hogan, T. P. (Eds.). (2005). Ages & Stages Questionnaires: A Parent Completed, Child-Monitoring System, Second Edition. In Comprehensive Directory of Assessment Products for Health, Mental Health, Rehabilitation, and Counseling Settings (Vol. 2005). Assessment Research.
• Vacca, J. J. (2002). Review of Ages & Stages Questionnaires: Social-Emotional. In T. P. Hogan (Ed.), Comprehensive Directory of Assessment Products for Health, Mental Health, Rehabilitation, and Counseling Settings (Vol. 2002). Assessment Research.
• Vacca, J. J. (2003). Review of the Ages & Stages Questionnaires: Social-Emotional: A Parent-Completed, Child-Monitoring System for Social-Emotional Behaviors. In T. P. Hogan (Ed.), Comprehensive Directory of Assessment Products for Health, Mental Health, Rehabilitation, and Counseling Settings (Vol. 2003). Assessment Research.
• Zeanah, C. H., & Lieberman, A. F. (2016). Defining relational pathology in early childhood: The Diagnostic Classification of Mental Health and Developmental Disorders of Infancy and Early Childhood. Infant Mental Health Journal, 37(5), 509–514. https://doi.org/10.1002/imhj.21588

13. Items of the Scale