Pediatric Symptom Checklist (PSC-35)

Abstract

The Pediatric Symptom Checklist (PSC-35) is a widely utilized, brief screening instrument designed to assess general psychosocial dysfunction in children and adolescents. Developed in the USA, its primary objective is to improve the early identification of emotional and behavioral problems in pediatric populations. The standard measure consists of 35 items, typically completed by a parent or guardian, and is suitable for children aged 4 to 18 years. The PSC-35 efficiently measures core domains of attention, externalizing symptoms, and internalizing symptoms. Its brevity makes it highly efficient for clinical use, requiring less than five minutes for administration and only one to two minutes for scoring.

Keywords

Pediatric Symptom Checklist, PSC-35, psychosocial screening, child psychology, behavioral assessment, internalizing symptoms, externalizing symptoms, attention deficits, mental health screening.

Authors

The original comprehensive validation and publication of the PSC-35 were conducted by a team of researchers including Jellinek, M. S., Murphy, J. M., Robinson, J., Feins, A., Lamb, S., and Fenton, T. (1988).

Purpose

The central purpose of the PSC-35 is to serve as an effective, brief screening tool for identifying potential psychosocial problems across a broad range of developmental stages in children. By quickly flagging potential issues, the instrument assists busy clinicians in determining which children may require further, more detailed diagnostic evaluation or referral for mental health services. The tool aims to capture the parent’s subjective impression of the child’s emotional and behavioral functioning, covering a broad spectrum of difficulties encountered in early development.

Construct

The PSC-35 measures the overarching construct of psychosocial dysfunction, which encompasses emotional and behavioral difficulties experienced by children. This construct is operationalized through three primary subscales or domains of symptoms:

• Attention Symptoms: Items related to difficulty focusing, restlessness, or concentration problems.
• Externalizing Symptoms: Items reflecting outward behaviors such as aggression, acting out, defiance, or conduct problems.
• Internalizing Symptoms: Items reflecting inward emotional states, including anxiety, depression, withdrawal, or somatic complaints.

The total score provides a general measure of the severity of psychosocial problems, while the subscale structure allows for a preliminary categorization of the nature of the difficulty.

Validity

The PSC-35 has demonstrated robust evidence of validity across multiple studies. Convergent validity was established by comparing the PSC-35 scores with those obtained from the longer, well-validated Child Behaviour Checklist (CBCL). This comparison yielded a strong Pearson’s r value of 0.81 (Vogels et al., 2009), indicating that the PSC-35 successfully measures similar underlying constructs as the CBCL. This correlation is considered a large effect size, according to Cohen (1992).

Furthermore, the instrument has proven effective in discriminating between clinically significant dysfunction and typical functioning. Psychometric analyses, including Receiver Operator Characteristic (ROC) analyses, were used to derive optimal cutoff scores. The test exhibits high sensitivity (0.95), suggesting it is very effective at correctly identifying children who truly have psychosocial problems. Its specificity is reported at 0.68 (Jellinek et al., 1988), indicating a reasonable ability to correctly identify those without significant clinical dysfunction when compared against other validated questionnaires and clinician assessments.

Reliability

The reliability of the PSC-35 is consistently reported as strong, particularly concerning internal consistency. Studies have shown that the instrument’s items cohere well to measure the intended construct. The internal consistency, measured using Cronbach’s alpha, was found to be 0.89 (Vogels et al., 2009). This high alpha coefficient suggests that the 35 items reliably measure the same underlying dimension of psychosocial distress across the population studied.

Factor Analysis

While specific details regarding the methodology (e.g., Exploratory or Confirmatory Factor Analysis) used to establish the factor structure are not fully detailed in the source material, the design of the PSC-35 is structured around three distinct clinical domains: attention, externalizing, and internalizing symptoms. This structure implies a robust three-factor model underlying the scale, guiding its use in clinical practice. The consistent utility of these three subscales in research and application supports the dimensional structure of the instrument.

Instrument

Test Type: Screening Questionnaire / Psychosocial Assessment Tool

Format: 35-item questionnaire, typically administered in paper-and-pencil format (or digital equivalent).

Language Available: English, Spanish, Chinese, and Japanese (for adapted versions).

Population Group: Children and Adolescents.

Age Group: 4 to 18 years.

Population Details: The measure is primarily administered to the parent or guardian of the child, reflecting their impression of the child’s emotional and behavioral problems. Adaptations exist for self-report by children over the age of 11.

Test Methodology: The scale uses a three-point Likert-type response format: Never, Sometimes, or Often, scored 0, 1, and 2 respectively. The total score is calculated by summing the item scores. Scoring criteria for a positive screen (indicating clinical level dysfunction) are: greater than 27 for children aged 6-18, and greater than 23 for children aged 4-5.

Keywords

Psychological screening, child mental health, behavioral problems, emotional problems, PSC-35 cutoff scores, parent report, psychometrics, clinical assessment.

Authors

Author ORCID Identifier: Information not available in the source material.

Affiliation Email addresses: Information not available in the source material.

Correspondence Address: Information not available in the source material.

Permissions & Fee and Test Year

The original PSC-35 was first published and validated in 1988 (Jellinek et al., 1988). Information regarding current permissions and licensing fees for clinical or large-scale research use should be sought directly from the Massachusetts General Hospital or affiliated copyright holders (as referenced in the 2017 source material).

Reference’s

• Cohen, J. (1992). A power primer. Psychological Bulletin, 112(1), 155–159. DOI: 10.1037/0033-2909.112.1.55
• Jellinek, M. S., Murphy, J. M., Robinson, J., Feins, A., Lamb, S., & Fenton, T. (1988). Pediatric symptom checklist: Screening schoolage children for psychosocial dysfunction. The Journal of Pediatrics, 112, 201-209. DOI: 10.1016/S0022-3476(88)80056-8.
• Massachusetts General Hospital. (2017). Pediatric Symptom Checklist. Retrieved from: http://www.massgeneral.org/psychiatry/services/psc_about.aspx
• Vogels, A. G., Crone, M. R., Hoekstra, F., & Reijneveld, S. A. (2009). Comparing three short questionnaires to detect psychosocial dysfunction among primary school children: A randomized method. BMC Public Health, 9(1), 489-501. DOI: 10.1186/1471-2458-9-489

Items of the Pediatric Symptom Checklist (PSC-35)

IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.

The specific list of 35 items comprising the Pediatric Symptom Checklist was not provided in the source content.