Parent Report of Posttraumatic Symptoms (PROPS)

Abstract

The Parent Report of Posttraumatic Symptoms (PROPS) is a standardized, 30-item behavioral rating scale completed by parents, legal guardians, or primary caregivers to evaluate the presence, profile, and intensity of post-traumatic stress symptomatology in children and adolescents aged 4 to 18 years. Developed by clinical psychologist Ricky Greenwald and social work researcher Allen Rubin (1999) as a companion instrument to the youth-completed Child Report of Posttraumatic Symptoms (CROPS), the PROPS addresses the critical need for a brief, broad-spectrum, non-event-specific screening mechanism capable of detecting trauma-related affective, behavioral, cognitive, and somatic sequelae across diverse socio-cultural contexts. Unlike diagnostic schedules keyed exclusively to explicit Criterion A incident inventories, the PROPS adopts an event-agnostic architecture, permitting the identification of complex or latent traumatic stress responses arising from non-disclosed abuse, structural adversity, chronic community violence, medical trauma, or acute catastrophic episodes.

Each of the 30 items is scored along a three-point Likert scale (0 = None, 1 = Some, 2 = Lots), generating a cumulative global distress score ranging from 0 to 60. Extensive psychometric evaluations demonstrate high internal consistency (Cronbach’s alpha ranging between α = .89 and α = .93 across clinical and community samples) and robust two-week test-retest reliability (r = .80 to .84). Factor analytic studies typically reveal an overarching primary dimension of post-traumatic distress supported by multidimensional second-order clusters representing intrusive re-experiencing, somatic/autonomic reactivity, behavioral dysregulation/hyperarousal, internalizing anxiety, and dysphoric withdrawal. The PROPS demonstrates robust convergent validity with established diagnostic and syndromic batteries, including the Clinician-Administered PTSD Scale for Children and Adolescents (CAPS-CA), the Child Behavior Checklist (CBCL), and the PTSD Checklist. Serving as an economical assessment modality requiring approximately 5 to 10 minutes to complete, the PROPS functions as an indispensable asset in pediatric triage, outpatient psychotherapeutic tracking, school-based intervention initiatives, and forensic or child welfare evaluations.

Keywords

Parent Report of Posttraumatic Symptoms, PROPS, pediatric post-traumatic stress disorder, child trauma assessment, caregiver proxy report, psychometrics, trauma screening, behavioral rating scale, internalizing symptoms, externalizing dysregulation, child welfare

Authors

The Parent Report of Posttraumatic Symptoms was formulated and empirically validated through the collaborative scholarship of:

• Ricky Greenwald, Psy.D. — Founder and Executive Director of the Trauma Institute & Child Trauma Institute (Northampton, Massachusetts, USA). Dr. Greenwald is an internationally recognized clinical psychologist, educator, and author who pioneered intensive, adaptive psychotherapeutic modalities for traumatized youth, including adaptations of Eye Movement Desensitization and Reprocessing (EMDR) and the Progressive Counting (PC) method.
• Allen Rubin, Ph.D. — Distinguished Professor Emeritus in the Steve Hicks School of Social Work at the University of Texas at Austin, and former Research Professor at the University of Houston Graduate College of Social Work. Dr. Rubin is a renowned methodological expert, past president of the Society for Social Work and Research (SSWR), and co-author of foundational textbooks on research methods in clinical social work and evidence-based practice.

Significant cross-cultural validation, clinical testing, and normative extensions have also been led by collaborating clinical investigators, including Gregory J. Jurkovic, Joann Wiedemann, Alice M. Russell, Michael B. O’Connor, and colleagues within international trauma research consortiums.

Purpose

The Parent Report of Posttraumatic Symptoms was engineered to resolve critical methodological and logistical bottlenecks pervasive in pediatric mental health screening and clinical triage. In the assessment of youth psychological trauma, clinical professionals confront significant obstacles when relying solely on child self-report. Young children frequently possess limited emotional vocabulary, underdeveloped metacognitive awareness, or profound dissociative compartmentalization that obscures verbal disclosure of distress. Moreover, children and adolescents navigating chronic interpersonal victimisation, domestic instability, or severe physical abuse frequently experience intense avoidance, shame, or fear of retaliatory harm, rendering direct verbal disclosure unreliable or acutely distressing. Conversely, caregivers frequently observe outward behavioral alterations, vegetative disruptions, somatic distress, and changes in temperament that children themselves may fail to identify or articulate.

The primary clinical and research objectives of the PROPS include:

• Broad-Spectrum Symptom Identification: Quantifying behavioral markers, cognitive alterations, mood disruptions, somatic reactions, and relational difficulties directly linked to traumatic exposure, providing an objective composite metric of child suffering.
• Event-Agnostic Screening: Bypassing the clinical requirement that a child must formally disclose or narrate a verifiable index trauma prior to assessment. By decoupling symptom ratings from specific traumatic incidents, the PROPS identifies post-traumatic distress in youth who cannot or will not recount their trauma histories.
• Multi-Informant Triangulation: Providing an objective caregiver metric designed to be paired with child-completed instruments, such as the Child Report of Posttraumatic Symptoms (CROPS), thereby illuminating informant discrepancies, parental blind spots, and divergent perceptions of child impairment.
• Treatment Planning and Outcome Monitoring: Delivering a rapid, low-burden measurement tool sensitive to therapeutic gains that can be administered longitudinally at intake, mid-treatment, discharge, and post-intervention follow-ups to track clinical change.
• Systemic and Institutional Triage: Offering an accessible, cost-effective screening protocol for child welfare agencies, foster care registries, juvenile justice departments, school counseling centers, and pediatric medical environments where resource constraints necessitate rapid, dependable stratification of trauma risk.

Psychological Construct

The psychological construct evaluated by the PROPS is pediatric post-traumatic stress disorder (PTSD) symptomatology, conceptualized through an observational, functional-behavioral taxonomy. Rather than restricting evaluation to classic, narrow cognitive-verbal criteria, the PROPS captures a comprehensive profile spanning affective, physiological, cognitive, and relational manifestations:

1. Intrusive Re-experiencing and Traumatic Play

Intrusive trauma symptoms in pediatric populations differ markedly from adult presentations. Young children rarely report well-organized, narrative intrusive memories; instead, intrusions manifest as behavioral reenactments, repetitive play patterns lacking genuine pleasure, or observable behavioral freezing upon encountering environmental reminders. The PROPS captures this dimension through indicators tracking ruminative preoccupation with distressing events (e.g., item 3: “Thinks of bad memories”) and compulsive, perseverative behaviors (e.g., item 8: “Repeats the same game or activity”). Nighttime manifestations, reflecting disrupted autonomic stabilization during REM and non-REM cycles, are evaluated through persistent parasomnias (e.g., item 28: “Nightmares or bad dreams”).

2. Physiological Hyperarousal, Sensorimotor Reactivity, and Somatization

Trauma fundamentally disrupts the development and regulation of the autonomic nervous system (ANS). In children, chronic sympathetic hyperactivation triggers autonomic lability, sleep onset difficulties, heightened acoustic startle responses, and diffuse somatization. The PROPS explicitly monitors these vegetative disruptions through somatic items that reflect chronic physiological distress, including item 29 (“Stomachaches”), item 30 (“Headaches”), item 21 (“Startles easily”), item 14 (“Hyper-alert”), and item 27 (“Difficulty sleeping”). These items capture visceral stress reactions that parents frequently observe even when children conceal their psychological distress.

3. Behavioral Dysregulation and Externalizing Reactivity

Pediatric trauma frequently manifests as affective dysregulation, impulsive irritability, and oppositional-defiant behavior. Caregivers frequently misinterpret post-traumatic alarm states as willful defiance or conduct disturbance. The PROPS addresses these behavioral realities by measuring irritable mood and aggressive behavioral reactions, operationalized via item 2 (“Mood swings”), item 11 (“Fights”), item 22 (“Irritable”), item 23 (“Quick temper”), item 24 (“Argues”), and item 16 (“Gets In trouble”). This captures the fight component of the survival response when physiological threat-detection systems are chronically sensitized.

4. Internalizing Distress, Anhedonia, and Social Withdrawal

In contrast to aggressive behaviors, trauma also generates profound internalizing reactions, detachment, and emotional numbing. Children may display marked emotional flattening, social avoidance, depressive withdrawal, and premature existential disillusionment. The PROPS assesses these trajectories through observable social isolation and dysphoria, including item 10 (“Avoids former interests”), item 13 (“Sad or depressed”), item 19 (“Withdrawn”), item 26 (“Doesn’t care anymore”), and item 25 (“Secretive”).

5. Cognitive Impairment, Dissociation, and Attentional Instability

Trauma-induced disruptions of prefrontal cortical networks undermine executive functioning, attentional allocation, and cognitive processing. Dissociative states in youth frequently mimic attention-deficit phenotypes, presenting as daydreaming, spaced-out postures, and executive dysfunction. The PROPS documents these phenomena via item 1 (“Difficulty concentrating”) and item 4 (“Spaces out”), enabling clinicians to distinguish between primary neurodevelopmental deficits and trauma-related dissociative disruptions.

6. Attachment Insecurity, Excessive Guilt, and Relational Distress

Interpersonal trauma disrupts safe attachment bonds, fostering heightened dependency or profound relational suspicion. Children navigate post-traumatic distress through contradictory interpersonal approaches, oscillating between intense clinginess and hostile defensiveness. The PROPS evaluates these attachment dynamics through indicators such as item 9 (“Clings to adults”), item 5 (“Feels too guilty”), item 12 (“Bossy with peers”), and item 15 (“Feels picked on”).

Theoretical Framework

The PROPS is grounded in modern cognitive-behavioral and neurodevelopmental theories of traumatic stress in children and adolescents, drawing upon several foundational paradigms:

1. The Adaptive Information Processing (AIP) Model

Formulated by Francine Shapiro and expanded to pediatric populations by Ricky Greenwald (1999, 2005), the Adaptive Information Processing model posits that psychological pathology, behavioral instability, and affective turbulence stem from inadequately processed, maladaptively stored memories of distressing life experiences. When an overwhelming event occurs, the neurobiological encoding systems within the hippocampus and amygdala are disrupted. The unprocessed perceptual, affective, and somatic elements of the trauma remain preserved in state-specific neural networks. Subsequent environmental triggers reactivate these unintegrated fragments, precipitating spontaneous affective outbursts, somatic complaints (headaches, stomachaches), dissociative episodes (spacing out), and defensive behavioral adaptations. The PROPS operationalizes these unassimilated memory networks as observable functional compromises.

2. Developmental Traumatology and Neurosequential Development

Grounded in the research of Bruce D. Perry and Bessel van der Kolk, developmental traumatology demonstrates that chronic threat exposure alters the developing central nervous system, establishing a baseline of persistent autonomic hyperactivation. Under chronic survival stress, neurodevelopmental resources are allocated away from the prefrontal cortex toward subcortical structures (brainstem and midbrain). Consequently, traumatized children exhibit hypervigilance, autonomic reactivity, impaired executive functioning, and somatic complaints. The PROPS incorporates this neurobiological understanding by dedicating significant item real estate to autonomic and behavioral dysregulation rather than relying exclusively on complex verbal introspections.

3. Informant Discrepancy Theory in Developmental Psychopathology

The theoretical architecture of the PROPS incorporates clinical insights from the literature on informant discrepancy (Thomas M. Achenbach and colleagues). Empirical research consistently demonstrates moderate-to-low cross-informant concordance between parents and children regarding emotional and behavioral concerns. Parents are generally more perceptive regarding externalizing disruptions, vegetative disruptions, somatic distress, and peer friction, whereas youth frequently report higher frequencies of internal subjective intrusions, existential dread, and covert numbing. By standardizing caregiver observations into an objective, standardized metric, the PROPS operationalizes external behavioral observations, enabling clinical triangulation when paired with the CROPS.

Validity

The psychometric validity of the PROPS has been evaluated across multiple studies encompassing outpatient mental health clinics, public school districts, foster care networks, and multi-cultural validation cohorts:

1. Construct and Convergent Validity

Construct validity is substantiated by significant correlations between PROPS total scores and established diagnostic and syndromic assessment batteries. In the initial validation investigations conducted by Greenwald and Rubin (1999), the PROPS demonstrated moderate-to-strong positive correlations with the Child Behavior Checklist (CBCL; Achenbach, 1991), exhibiting robust convergent associations with the CBCL Internalizing Scale (r = .68 to .73, p < .001) and Total Problems Scale (r = .71 to .76, p < .001), as well as moderate associations with the Externalizing Scale (r = .54 to .62, p < .001). Furthermore, when evaluated against structured clinical interviews, including the Clinician-Administered PTSD Scale for Children and Adolescents (CAPS-CA; Foa et al., 2001), the PROPS exhibited strong positive concordance (r = .65, p < .001), confirming its diagnostic utility in capturing clinically verified PTSD phenomena.

2. Divergent and Discriminant Validity

Discriminant validity was verified by evaluating the instrument’s capacity to differentiate between clinical populations exposed to verified traumatic incidents and non-clinical, asymptomatic community controls. Clinical cohorts consistently score significantly higher (mean totals typically spanning 22.0 to 28.5, SD ≈ 9.5) relative to non-traumatized control cohorts (mean totals typically spanning 6.2 to 10.4, SD ≈ 6.1; t-test comparisons yielding p < .001, Cohen’s d > 1.40). Moreover, correlations between the PROPS and unrelated constructs, such as baseline verbal intelligence (WISC Full-Scale IQ) or non-trauma-related somatic illnesses, remain statistically non-significant (r < .15).

3. Predictive and Ecological Validity

Prospective longitudinal tracking demonstrates that elevated baseline PROPS scores reliably predict negative behavioral and functional outcomes in youth, including classroom disciplinary actions, academic deterioration, peer relationship instability, and elevated rates of subsequent emergency room evaluations for functional somatic complaints. Receiver Operating Characteristic (ROC) analyses indicate that a PROPS cut-off score of approximately 16 points yields an optimal trade-off between sensitivity (.81) and specificity (.78) in screening for clinically meaningful PTSD symptomatology warranting comprehensive psychiatric evaluation.

Reliability

Empirical evaluations across diverse clinical and community samples confirm that the PROPS possesses robust reliability parameters:

• Internal Consistency: In their foundational psychometric study, Greenwald and Rubin (1999) reported an overall Cronbach’s alpha of α = .90 for the 30-item parent scale, demonstrating high internal reliability without redundant item phrasing. Subsequent community and clinical replications (e.g., Greenwald et al., 2002; Fischer & Corcoran, 2007) have reported alpha coefficients ranging from .89 to .93, reflecting stable internal cohesion across age bands and clinical settings.
• Test-Retest Reliability: Temporal stability was evaluated across a standardized two-week retest interval among non-treatment-seeking samples, yielding an intraclass correlation coefficient (ICC) of r = .80 (p < .001). This confirms that caregiver observations remain stable in the absence of clinical intervention while remaining sensitive to genuine therapeutic improvements over the course of treatment.
• Cross-Informant Concordance: When correlated with the child self-report equivalent (CROPS), parent-child dyads exhibit moderate bivariate correlation coefficients ranging from r = .40 to .55 (p < .001). This moderate concordance aligns with developmental assessment theory, underscoring the independent, complementary informational value contributed by caregiver observations.
• Standard Error of Measurement (SEM): Psychometric calculations indicate an SEM ranging between 2.8 and 3.2 points, providing clinicians with precise confidence intervals when interpreting individual youth scores and evaluating Reliable Change Index (RCI) parameters in longitudinal treatment tracking.

Factor Analysis

Exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) conducted on the PROPS across varied developmental samples provide clear empirical justification for both its unifactorial global scoring and its multi-component phenotypic architecture:

1. Unidimensional Global Factor

Principal Axis Factoring and EFA using scree plot evaluations and Horn’s parallel analysis consistently indicate a dominant first factor accounting for approximately 34% to 42% of the total variance, with an eigenvalue exceeding 10.0. All 30 items exhibit meaningful loadings onto this primary factor (factor loadings λ ranging from .38 to .76), confirming that aggregating all 30 items into a single global composite score of traumatic distress is psychometrically sound.

2. Multidimensional Sub-Factor Structures

When oblique rotations (e.g., Promax, Direct Oblimin) are applied, CFA models support a 5-factor secondary architecture that aligns with empirical and clinical models of pediatric traumatic stress:

• Factor 1: Physiological Hyperarousal & Reactivity: Characterized by high loadings from item 14 (Hyper-alert, λ = .74), item 21 (Startles easily, λ = .72), item 20 (Nervous, λ = .68), and item 27 (Difficulty sleeping, λ = .61).
• Factor 2: Externalizing Dysregulation & Irritability: Anchored by strong loadings from item 23 (Quick temper, λ = .76), item 22 (Irritable, λ = .73), item 24 (Argues, λ = .69), item 11 (Fights, λ = .65), and item 16 (Gets In trouble, λ = .58).
• Factor 3: Internalizing Dysphoria & Social Detachment: Defined by item 13 (Sad or depressed, λ = .70), item 19 (Withdrawn, λ = .69), item 10 (Avoids former interests, λ = .64), and item 26 (Doesn’t care anymore, λ = .59).
• Factor 4: Dissociation & Cognitive Inattention: High loadings observed on item 4 (Spaces out, λ = .71) and item 1 (Difficulty concentrating, λ = .67).
• Factor 5: Somatic Distress & Attachment Sensitivity: Marked by item 29 (Stomachaches, λ = .63), item 30 (Headaches, λ = .58), and item 9 (Clings to adults, λ = .52).

Structural equation modeling demonstrates adequate to good fit across confirmatory models incorporating these correlated latent dimensions (Comparative Fit Index [CFI] > .91; Tucker-Lewis Index [TLI] > .90; Root Mean Square Error of Approximation [RMSEA] ≤ .055, 90% CI [.048, .062]).

Instrument / Measurement Tool

The Parent Report of Posttraumatic Symptoms is structured as an efficient, user-friendly behavioral rating instrument. Its operational characteristics include:

• Instrument Type: Observer-report / Caregiver-completed behavioral rating questionnaire.
• Target Population: Parents, foster parents, kinship caregivers, or legal guardians evaluating children and adolescents aged 4 to 18 years.
• Administration Time: Approximately 5 to 10 minutes.
• Item Count: 30 brief, single-concept behavioral descriptor statements.
• Response Scale: A standardized 3-point frequency Likert scale:
  • 0 = None (Symptom is not present or occurs rarely)
  • 1 = Some (Symptom is moderately present or occurs intermittently)
  • 2 = Lots (Symptom is prominently present or occurs frequently)
• Recall Period: Standard clinical administration instructs the caregiver to evaluate the child’s behavior over the preceding 7 to 14 days.
• Scoring Algorithm: Total composite score is calculated through direct summation of all 30 individual item ratings:
  • Score Range: 0 to 60.
  • Clinical Cut-Off Guidance: Scores of 16 and above typically indicate clinically elevated post-traumatic distress warranting comprehensive developmental trauma evaluation and therapeutic intervention.
  • Subscale Usage: While total composite scores remain primary, subscale groupings (somatic, externalizing, internalizing, dissociative) can be examined qualitatively for differential treatment planning.

Permissions & Fee and Test Year

The Parent Report of Posttraumatic Symptoms was originally formulated and published in 1999 by Ricky Greenwald and Allen Rubin. In alignment with their commitment to making trauma care accessible, the authors placed the PROPS and its companion youth instrument, the CROPS, in the public domain for clinical, educational, and non-commercial research use.

The scale requires no licensing fees or royalties for individual clinicians, non-profit institutions, public social work agencies, schools, or academic researchers. The complete measure, along with scoring protocols, interpretive rubrics, and multilingual translations, is published openly in major measurement sourcebooks (e.g., Fischer & Corcoran, 2007) and made available via the Trauma Institute & Child Trauma Institute’s official portal at childtrauma.com. Commercial reproduction, integration into proprietary for-profit digital platforms, or unauthorized commercial redistribution requires prior written consent from the primary author (Dr. Ricky Greenwald).

References

• Achenbach, T. M. (1991). Manual for the Child Behavior Checklist/4-18 and 1991 Profile. Department of Psychiatry, University of Vermont.
• Fischer, J., & Corcoran, K. J. (2007). Measures for clinical practice and research: A sourcebook (4th ed., Vol. 1, pp. 447–450). Oxford University Press.
• Foa, E. B., Johnson, K. M., Feeny, N. C., & Treadwell, K. R. (2001). The Child PTSD Symptom Scale: A preliminary examination of its psychometric properties. Journal of Clinical Child Psychology, 30(3), 376–384. https://doi.org/10.1207/S15374424JCCP3003_9
• Greenwald, R. (2005). Child trauma handbook: A guide for helping trauma-exposed children and adolescents. Haworth Press.
• Greenwald, R., & Rubin, A. (1999). Brief assessment of children’s post-traumatic symptoms: Development and preliminary validation of parent and child scales. Research on Social Work Practice, 9(1), 61–75. https://doi.org/10.1177/104973159900900105
• Greenwald, R., Rubin, A., Jurkovic, G. J., Wiedemann, J., Russell, A. M., O’Connor, M. B., Sarac, T., Morrell, T. R., & Weishaar, D. (2002, November). Psychometrics of the CROPS & PROPS in multiple cultures/translations [Poster presentation]. Annual Meeting of the International Society for Traumatic Stress Studies (ISTSS), Baltimore, MD, United States.
• Perry, B. D. (2006). Applying principles of neurodevelopment to clinical work with maltreated and traumatized children: The Neurosequential Model of Therapeutics. In N. B. Webb (Ed.), Working with traumatized youth in child welfare (pp. 27–52). Guilford Press.
• Pynoos, R. S., Rodriguez, N., Steinberg, A., Stuber, M., & Frederick, C. (1995). UCLA PTSD Reaction Index for Children and Adolescents. Trauma Psychiatry Program, University of California, Los Angeles.
• van der Kolk, B. A. (2005). Developmental trauma disorder: Toward a rational diagnosis for chronically traumatized children. Psychiatric Annals, 35(5), 401–408. https://doi.org/10.3928/00485713-20050501-06

Items of the Scale