Attachment to Parents—Seattle Social Development Project

Abstract

The Attachment to Parents—Seattle Social Development Project (AP-SSDP) scale is a brief, psychometrically validated self-report instrument designed to quantify the affective closeness and communicative bonding between adolescents and their parental figures. Originating from the landmark Seattle Social Development Project (SSDP) directed by J. David Hawkins and Richard F. Catalano, and subsequently embedded within the Communities That Care (CTC) Youth Survey, this four-item measure assesses attachment within the maternal and paternal dyads. Grounded in the Social Development Model (SDM)—an integrated etiology synthesizing social control theory, social learning theory, and differential association—the instrument captures two critical facets of relational bonding: perceived emotional closeness and mutual affective disclosure. Each item is scored on a distinct, developmentally sensitive four-point capitalized response scale ranging from “NO!” (1) to “YES!” (4), generating a composite score from 4 to 16. Extensive psychometric evaluations across diverse, multi-ethnic normative and high-risk adolescent cohorts have demonstrated robust internal consistency reliability (with Cronbach’s alpha coefficients typically ranging from .72 to .84), high test-retest stability, and sound factorial integrity via confirmatory factor analysis (CFA). Criterion and predictive validity analyses have consistently verified that elevated parental attachment scores buffer against adolescent substance initiation, delinquent offending, school disengagement, and peer-related antisocial socialization. This article presents an exhaustive psychometric evaluation of the AP-SSDP, delineating its theoretical underpinnings, structural validity, epidemiological utility, and operational parameters for longitudinal and clinical intervention research.

Keywords

Seattle Social Development Project, Attachment to Parents, Social Development Model, Communities That Care, adolescent attachment, protective factors, delinquency prevention, parent-child communication, psychometrics, risk and protective factors, social bonding, emotional disclosure

Authors

The Attachment to Parents measure was established by the primary investigators of the Seattle Social Development Project at the Social Development Research Group (SDRG), based in the School of Social Work at the University of Washington, Seattle, Washington, USA:

• J. David Hawkins, Ph.D. — Endowed Professor Emeritus of Prevention, Social Development Research Group, School of Social Work, University of Washington. Co-originator of the Social Development Model and Communities That Care system.
• Richard F. Catalano, Ph.D. — Professor Emeritus of Social Work, Social Development Research Group, School of Social Work, University of Washington. Co-developer of the Social Development Model.
• Michael W. Arthur, Ph.D. — Research Professor Emeritus, Department of Psychology and Social Development Research Group, University of Washington. Principal developer of the Communities That Care Youth Survey instrument and cross-sectional measurement models.
• John A. Pollard, Ph.D. — Psychometrician and Senior Research Consultant, Social Development Research Group, University of Washington.
• A. J. Baglioni Jr., Ph.D. — Quantitative Methodologist and Psychometrician, collaborating with the SDRG on state- and national-level factor-analytic validations of risk and protective factor batteries.

Purpose

The primary clinical and epidemiological objective of the AP-SSDP is the rapid, accurate quantification of parental attachment as an essential protective factor during early and middle adolescence (ages 11 to 18; grades 6 through 12). During this transitional period, individuals encounter heightened susceptibility to social and environmental risk factors, including peer pressure, substance exposure, and delinquency. Built into population-level epidemiological tools—such as the Communities That Care (CTC) Youth Survey and the Centers for Disease Control and Prevention (CDC) Compendium of Assessment Tools—the scale was designed to overcome the logistical constraints of lengthy, clinically intensive attachment protocols that are impractical for large-scale school-based surveillance or community intervention trials.

Beyond screening and baseline profiling, the AP-SSDP serves multiple distinct empirical and clinical functions:

• Epidemiological Risk and Protection Surveillance: It enables municipal, state, and educational authorities to establish community-level baselines of familial bonding, assisting public health officials in targeting prevention resources to youth populations displaying compromised familial attachment.
• Etiological and Longitudinal Research: Designed explicitly for longitudinal designs, it permits developmental criminologists and psychologists to track the protective trajectory of parent-child bonds across critical developmental thresholds, assessing how stability or erosion in attachment mediates or moderates the onset of externalizing and internalizing psychopathologies.
• Intervention Evaluation: Family-focused preventive interventions (e.g., Guiding Good Choices, formerly Preparing for the Drug-Free Years) frequently employ the AP-SSDP as a primary outcome metric to evaluate whether parent-training protocols successfully enhance bonding, communicative openness, and mutual positive regard.
• Clinical Stratification: In school counseling and juvenile diversion frameworks, the scale aids in differentiating between conduct problems emerging within intact, highly bonded domestic environments versus those compounded by severed familial attachment and pervasive communicative alienation.

Psychological Construct

The AP-SSDP operationalizes parental attachment not through the traditional infant-caregiver behavioral categories of John Bowlby and Mary Ainsworth (e.g., secure, anxious-ambivalent, avoidant classifications derived from the Strange Situation), but rather through a socio-developmental lens tailored to adolescent autonomy and relational realignment. In this paradigm, attachment denotes an enduring affective and communicative bond characterized by positive emotional valence and interpersonal trust between the adolescent and their primary maternal and paternal caregivers.

The construct encompasses two interrelated, conceptually symmetrical dimensions across maternal and paternal figures:

1. Affective Closeness (Emotional Proximity)

Operationalized by the items assessing whether the adolescent feels “very close” to their mother (Item 1) and father (Item 3), this dimension captures the warmth, identification, and subjective perception of intimacy existing between child and parent. Affective closeness reflects a perceived sanctuary of mutual regard and emotional safety. Adolescents who endorse high closeness view their parents as emotionally accessible, loving, and supportive, creating an internal psychological anchor that diminishes externalizing acting-out behaviors.

2. Affective and Cognitive Disclosure (Open Communication)

Operationalized by the items evaluating whether the youth shares their “thoughts and feelings” with their mother (Item 2) and father (Item 4), this dimension assesses reciprocal communicative intimacy and voluntary vulnerability. Open communication is a behavioral manifestation of psychological safety; it indicates that the youth does not fear excessive punitive retaliation, rejection, or dismissiveness when disclosing their internal state, moral dilemmas, or socio-emotional conflicts. In sociological delinquency models, communicative disclosure acts as an essential conduit through which parents transmit prosocial norms, maintain implicit supervision, and provide regulatory feedback.

By balancing parallel maternal and paternal items, the scale recognizes that adolescents establish distinct, dyadic attachment relationships within the family system. A youth may maintain high closeness and communication with one parental figure while experiencing alienation or distance from another. When aggregated, the construct represents a robust index of overall familial social integration and informal social control.

Theoretical Framework

The conceptual blueprint of the AP-SSDP is rooted directly in the Social Development Model (SDM) formulated by J. David Hawkins and Richard F. Catalano (1996; Hawkins & Weis, 1985). The SDM represents an overarching synthesis of three foundational criminological and sociological traditions:

• Social Control Theory (Hirschi, 1969): Travis Hirschi’s social bonding theory posits that individuals are naturally motivated toward deviance unless restrained by strong bonds to conventional society. The social bond consists of four primary components: attachment, commitment, involvement, and belief. Attachment—the emotional tie to and concern for the opinions of prosocial others (predominantly parents)—serves as the foundational cornerstone. When an adolescent feels attached to parents, they internalize the parental perspective, asking implicitly, “What will my parents think?” This psychological consideration acts as an internal regulator that prevents delinquent behavior.
• Social Learning Theory (Bandura, 1977; Akers, 1977): Albert Bandura’s observational learning and Ronald Akers’ differential reinforcement principles emphasize that behavioral patterns are acquired through interaction with primary socializing agents. The SDM integrates this by showing that youth bond with socializing units (e.g., families) that provide opportunities for prosocial involvement, cultivate skills for effective participation, and consistently deliver positive reinforcement for prosocial behavior.
• Differential Association Theory (Sutherland, 1947): The SDM adopts Edwin Sutherland’s premise that criminal and antisocial behaviors are learned through interaction with intimate social groups. If attachment to prosocial parents is strong, the probability of affiliating with antisocial, substance-using peer networks is drastically attenuated.

Within the SDM framework, parental attachment functions as an active intermediary mechanism within a causal developmental cascade. Prosocial family environments that offer rich opportunities for interaction and reinforce competence foster strong parent-child attachment. This attachment produces an elevated commitment to conventional family expectations and a firm belief in prosocial behavioral norms. Consequently, the adolescent develops psychological resilience against antisocial behavioral trajectories, illegal substance experimentation, and academic withdrawal.

Validity

The AP-SSDP has undergone extensive construct, concurrent, convergent, discriminant, and predictive validity assessments within longitudinal investigations conducted by the Social Development Research Group and affiliated cross-national research teams.

Construct and Structural Validity

In large-scale psychometric studies validating the Communities That Care Youth Survey—such as the normative multi-state cohort study of 72,618 students across grades 6, 8, 10, and 12 conducted by Arthur et al. (2002)—the four items demonstrated solid construct validity. Confirmatory factor analysis verified that the items loaded decisively on their designated latent protective factor (Family Domain: Attachment to Parents), showing structural stability across varying demographic groups, socioeconomic strata, and grade levels.

Convergent and Concurrent Validity

The scale correlates robustly and positively with collateral measures of familial functioning. Empirical investigations have shown strong positive correlations between the AP-SSDP and:

• Parental Opportunities for Prosocial Involvement ($r = .55$ to $.65$, $p < .001$)
• Parental Rewards for Prosocial Involvement ($r = .50$ to $.62$, $p < .001$)
• Family Cohesion and Parental Monitoring inventories ($r = .48$ to $.58$, $p < .001$)

Conversely, the scale demonstrates significant negative correlations with familial risk constructs, including Family Conflict ($r = -.42$ to $-.52$) and Parental Attitudes Favorable to Substance Use ($r = -.30$ to $-.38$).

Discriminant Validity

Multitrait-multimethod analyses confirmed that while parental attachment is positively associated with attachments in other domains (such as School Attachment and Community Bonding), the cross-domain intercorrelations remain modest ($r pprox .25$ to $.38$). This confirms that the AP-SSDP captures variance unique to familial primary relationships, distinct from general institutional adherence or peer-related affiliation.

Predictive and Criterion Validity

The definitive value of the AP-SSDP lies in its longitudinal predictive validity. Longitudinal tracking within the Seattle Social Development Project and subsequent state-wide CTC implementations demonstrated that higher scores on the AP-SSDP in middle school (grades 6–8) significantly lower the likelihood of:

• Lifetime and past-month alcohol, tobacco, and cannabis consumption at age 14, 16, and 18 (odds ratios ranging from $0.65$ to $0.82$, controlling for baseline sociodemographics).
• Involvement in violent delinquency and carrying concealed weapons.
• Suspension or expulsion from secondary educational institutions.
• Affiliation with delinquent or gang-involved peer clusters.

Reliability

The AP-SSDP exhibits strong internal consistency and measurement precision, maintaining stable reliability coefficients across diverse adolescent subgroups.

Internal Consistency

In the foundational psychometric study of the Communities That Care Youth Survey by Arthur, Hawkins, Pollard, Catalano, and Baglioni (2002), the internal consistency of the Attachment to Parents scale was examined across four distinct grade cohorts consisting of tens of thousands of adolescents:

• Grade 6: $\alpha = .72$
• Grade 8: $\alpha = .76$
• Grade 10: $\alpha = .80$
• Grade 12: $\alpha = .81$

The progressive increase in alpha coefficients across age strata reflects cognitive maturation and the increasing stability of adolescent perceptions concerning their relationships with maternal and paternal figures. In independent statewide surveillance evaluations (e.g., Glaser, Van Horn, Arthur, & Hawkins, 2005) and statewide administrations in Pennsylvania, Utah, and Washington, Cronbach’s alpha values have consistently registered between $.76$ and $.84$, well exceeding the conventional $.70$ benchmark for brief behavioral screening scales.

Item-Total Correlations and Stability

Corrected item-total correlations across all four items consistently fall between $.52$ and $.71$. Inter-item correlation coefficients typically range from $.38$ to $.64$, indicating high mutual cohesion without problematic item redundancy. In longitudinal panel cohorts re-tested over 6-month intervals in non-intervened control populations, the AP-SSDP exhibited test-retest stability coefficients exceeding $r = .68$, indicating an enduring relational trait rather than an unstable, fluctuating affective state.

Factor Analysis

The factor structure of the AP-SSDP has been established through both Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA) within the broader psychometric framework of the Communities That Care risk and protective factor assessment battery.

Confirmatory Factor Analysis (CFA) Specifications

In CFA models testing the Family Domain protective factors (Arthur et al., 2002; Pollard, Hawkins, & Arthur, 1999), the four items are specified to load onto a single unidimensional latent factor: Attachment to Parents. Across large-scale representative samples, this unidimensional formulation consistently demonstrates strong goodness-of-fit indices:

• Comparative Fit Index (CFI): $.97$ to $.99$ (exceeding the standard $.95$ cutoff for excellent fit)
• Tucker-Lewis Index (TLI): $.96$ to $.98$
• Root Mean Square Error of Approximation (RMSEA): $.038$ to $.052$ ($90%\text{ CI } [.031, .061]$)
• Standardized Root Mean Square Residual (SRMR): $.022$ to $.034$

Standardized Factor Loadings

When evaluated in single-factor structural models using Maximum Likelihood or Robust Weighted Least Squares (WLSMV) estimation, the standardized factor loadings ($lambda$) are robust and statistically significant ($p < .001$):

• Item 1 (Feel very close to mother): $lambda = .74$ to $.82$
• Item 2 (Share thoughts/feelings with mother): $lambda = .71$ to $.78$
• Item 3 (Feel very close to father): $lambda = .70$ to $.79$
• Item 4 (Share thoughts/feelings with father): $lambda = .68$ to $.76$

Dyadic and Higher-Order Structural Considerations

Methodological researchers have examined whether a correlated two-factor dyadic model—separating maternal attachment (Items 1 and 2) from paternal attachment (Items 3 and 4)—provides superior fit compared to the single composite factor. While the two-factor model yields a marginally lower Chi-square statistic ($\Delta\chi^2$), the latent correlation between the maternal and paternal factors is high ($r > .60$). Consequently, psychometricians support the continued use of the parsimonious unidimensional composite score for epidemiological profiling and structural equation modeling of overarching family protection.

Instrument / Measurement Tool

• Instrument Name: Attachment to Parents—Seattle Social Development Project (AP-SSDP)
• Alternative Instrument Associations: Communities That Care (CTC) Youth Survey – Family Domain: Attachment to Parents Scale
• Source Compendium: Measuring Violence-Related Attitudes, Behaviors, and Influences Among Youths: A Compendium of Assessment Tools (CDC), pp. 296–297
• Target Population: Adolescents and youth aged 11 to 18 (grades 6 through 12)
• Administration Format: Self-report questionnaire; available in paper-and-pencil, computerized, and online school-survey administration modes
• Estimated Completion Time: 1 to 2 minutes
• Number of Items: 4 items
• Response Scale: Four-point, forced-choice categorical response format utilizing capitalized exclamation typography to accentuate intensity:
  • YES! = 4
  • yes = 3
  • no = 2
  • NO! = 1
• Scoring Algorithm:
  • All items are keyed in a positive direction; no reverse-scoring is required.
  • Point values across all completed items are summed to yield a total composite score ranging from 4 to 16.
  • Alternatively, a mean item score can be derived (ranging from 1.00 to 4.00) by dividing the total sum by 4, retaining the original metric interpretability.
  • Missing Data Handling: If a respondent lives in a single-parent household (e.g., father or mother absent), CTC protocol guidelines recommend calculating the mean of the available parent dyad, or imputing based on valid responses within the family domain subscale if at least 50% of domain items are non-missing.
• Interpretation of Scores: Higher numerical scores denote stronger levels of parental attachment, emotional closeness, and communicative openness. In CTC risk and protective profiling, scores are compared against statewide or national epidemiological norms to identify cohorts falling below the 50th percentile for focused preventive intervention.

Permissions & Fee and Test Year

The Attachment to Parents measure was operationalized during the foundational phases of the Seattle Social Development Project throughout the late 1980s and early 1990s, with formal population-level normative psychometric validation published in 2002 by Arthur, Hawkins, Pollard, Catalano, and Baglioni. In 2005, the instrument was curated and published by the Centers for Disease Control and Prevention (CDC) within their comprehensive public compendium, Measuring Violence-Related Attitudes, Behaviors, and Influences Among Youths.

Licensing and Fee Structure: As a product developed through public funding administered by the U.S. federal government (including the National Institute on Drug Abuse, the Office of Juvenile Justice and Delinquency Prevention, and the Substance Abuse and Mental Health Services Administration [SAMHSA]), the assessment tool is placed within the public domain. There is no fee required for educational, governmental, or scientific utilization. Researchers and community coalitions may administer, replicate, and translate the scale without purchasing proprietary licenses, provided that appropriate scholarly attribution is accorded to the original authors and the Social Development Research Group at the University of Washington.

References

• Akers, R. L. (1977). Deviant behavior: A social learning approach (2nd ed.). Wadsworth Publishing.
• Arthur, M. W., Hawkins, J. D., Pollard, J. A., Catalano, R. F., & Baglioni, A. J. (2002). Measuring risk and protective factors for substance use, delinquency, and other adolescent problem behaviors: The Communities That Care Youth Survey. Evaluation Review, 26(6), 575–601. https://doi.org/10.1177/0193841X0202600601
• Bandura, A. (1977). Social learning theory. Prentice-Hall.
• Catalano, R. F., & Hawkins, J. D. (1996). The social development model: A theory of antisocial behavior. In J. D. Hawkins (Ed.), Delinquency and crime: Current theories (pp. 149–197). Cambridge University Press. https://doi.org/10.1017/CBO9780511527623.007
• Dahlberg, L. L., Toal, S. B., Swahn, M., & Behrens, C. B. (2005). Measuring violence-related attitudes, behaviors, and influences among youths: A compendium of assessment tools (2nd ed.). Centers for Disease Control and Prevention, National Center for Injury Prevention and Control. https://www.cdc.gov/violenceprevention/pdf/YV_Compendium.pdf
• Glaser, R. R., Van Horn, M. L., Arthur, M. W., & Hawkins, J. D. (2005). Measurement properties of the Communities That Care Youth Survey across demographic groups. Journal of Quantitative Criminology, 21(1), 73–102. https://doi.org/10.1007/s10940-004-1788-1
• Hawkins, J. D., Catalano, R. F., & Miller, J. Y. (1992). Risk and protective factors for alcohol and other drug problems in adolescence and early adulthood: Implications for substance abuse prevention. Psychological Bulletin, 112(1), 64–105. https://doi.org/10.1037/0033-2909.112.1.64
• Hawkins, J. D., & Weis, J. G. (1985). The social development model: An integrated approach to delinquency prevention. Journal of Primary Prevention, 6(2), 73–97. https://doi.org/10.1007/BF01325432
• Hirschi, T. (1969). Causes of delinquency. University of California Press.
• Pollard, J. A., Hawkins, J. D., & Arthur, M. W. (1999). Identifying risk and protective factors for youth problems: Assessing the Communities That Care Youth Survey. Evaluation and Program Planning, 22(1), 145–160. https://doi.org/10.1016/S0149-7189(99)00004-7
• Sutherland, E. H. (1947). Principles of criminology (4th ed.). J.B. Lippincott.

13. Items of the Scale (Questionnaire)