Validity and reliability of the Spanish version of the Personal and Social Performance scale in adolescents with schizophrenia.
BACKGROUND
The Personal and Social Performance (PSP) scale is a widely used tool to evaluate adults with schizophrenia; however, more studies are needed regarding its usefulness in the assessment of adolescent patients, since the evaluation of their functioning could require adaptations according to development.


OBJECTIVE
To examine construct validity, convergent validity, internal consistency and interrater reliability of the PSP in a sample of Mexican adolescents with schizophrenia.


METHODS
A total of 40 patients with a DSM-IV diagnosis of schizophrenia or schizophreniform disorder were evaluated with PSP, CGAS, PANSS and the MATRICS battery. Construct and convergent validity were determined by the correlation between PSP with PANSS factors, MATRICS dimensions and CGAS. In addition, reliability was evaluated with Cronbach's alpha and intraclass correlation coefficients.


RESULTS
PSP scores correlated with negative, excitement and cognitive factors of PANSS, CGAS as well as MATRICS domains. The PSP also showed high internal consistency and interrater reliability.


CONCLUSIONS
The PSP is a valid and reliable instrument for the assessment of adolescent patients.
Child Psychiatric Hospital Dr. Juan N Navarro, Mexico City, Mexico. Electronic address: eulloa@hotmail.com.
Rosa-Elena
RE
Ulloa
Arete Proyectos, Mexico City, Mexico; Universidad de las Américas, Mexico City, Mexico.
Rogelio
R
Apiquian
Arete Proyectos, Mexico City, Mexico.
Gamaliel
G
Victoria
Child Psychiatric Hospital Dr. Juan N Navarro, Mexico City, Mexico.
Sofía
S
Arce
Centro Médico Imbanaco, Cali Colombia.
Natalia
N
González
Instituto Nacional de Psiquiatría, Mexico City, Mexico.
Lino
L
Palacios
D000293:Adolescent; D002648:Child; D005260:Female; D006801:Humans; D007398:Interpersonal Relations; D008297:Male; D010551:Personality; D011569:Psychiatric Status Rating Scales; D011594:Psychometrics / Q000592:standards*; D015203:Reproducibility of Results; D012559:Schizophrenia / Q000175:diagnosis*; D012565:Schizophrenic Psychology; D012919:Social Behavior; D014175:Translating
Adolescents; Cognition; PSP; Rating scales; Social functioning; Spanish; Validity