Psychometric evaluation of the Turkish Adaptation of Parent-Child Sleep Interaction Scale (PSIS) for preschoolers

Parent-child sleep interaction is significant considering the high incidence of sleep problems in early childhood and the influence of parents on children's sleep habits. This study aimed to investigate the psychometric properties of a Turkish adaptation of the Parent-Child Sleep Interaction Scale (PSIS) for preschoolers. We evaluated the internal consistency, test-retest reliability, construct validity, and criterion validity of the PSIS. The study was carried out with 424 parents of preschoolers between January and June 2021. The Confirmatory factor analysis (CFA) confirmed the three-dimensional and 12-item structure of the scale with acceptable fit values. The Cronbach's alpha coefficients for the factors of the scale were 0.81 for sleep dependence, 0.76 for sleep reinforcement, and 0.72 for sleep conflict. Test-retest correlations were 0.87, 0.86, and 0.94, respectively (p < .05). The Pictorial Pediatric Symptom Checklist (PPSC) externalizing scores correlated significantly with the PSIS total scores and sleep conflict scores. The PPSC internalizing scores were significantly correlated with the PSIS total and sleep conflict scores. Our study is the first to establish the validity and reliability of the PSIS for Turkish preschoolers.