Picture of sea vessel plough through rough maritime conditions

Innovations in marine technology, pioneered through Open Access research...

Strathprints makes available scholarly Open Access content by researchers in the Department of Naval Architecture, Ocean & Marine Engineering based within the Faculty of Engineering.

Research here explores the potential of marine renewables, such as offshore wind, current and wave energy devices to promote the delivery of diverse energy sources. Expertise in offshore hydrodynamics in offshore structures also informs innovations within the oil and gas industries. But as a world-leading centre of marine technology, the Department is recognised as the leading authority in all areas related to maritime safety, such as resilience engineering, collision avoidance and risk-based ship design. Techniques to support sustainability vessel life cycle management is a key research focus.

Explore the Open Access research of the Department of Naval Architecture, Ocean & Marine Engineering. Or explore all of Strathclyde's Open Access research...

Tracking emotional and behavioural changes in childhood : does the strength and difficulties questionnaire (SDQ) measure the same constructs across time?

Sosu, Edward M. and Schmidt, Peter (2016) Tracking emotional and behavioural changes in childhood : does the strength and difficulties questionnaire (SDQ) measure the same constructs across time? Journal of Psychoeducational Assessment, 35 (7). pp. 643-656. ISSN 1557-5144

[img] Text (Sosu-Schmidt-JPA-2016-Tracking-emotional-and-behavioural-changes-in-childhood.pdf)
Sosu_Schmidt_JPA_2016_Tracking_emotional_and_behavioural_changes_in_childhood.pdf.docx
Accepted Author Manuscript

Download (132kB)

Abstract

Goodman’s (1997) Strength and Difficulties Questionnaire (SDQ) is widely used to measure emotional and behavioural difficulties in childhood and adolescence. In the present study, we examined whether the SDQ measures the same construct across time, when used for longitudinal research. A nationally representative sample of parents (N=3375) provided data on their children at ages 4, 5, and 6. Using confirmatory factor analysis (CFA) for ordinal data, two competing models (3 versus 5-factor models) were tested to establish equivalence across time. Results showed that the 5-factor model had a superior fit to the data compared to the alternative 3-factor model which only achieved an adequate fit at a configural level. Strong longitudinal factorial invariance was established for the 5-factor parent version of the SDQ. Our findings support the use of the SDQ in longitudinal studies, and provide the important psychometric information required for basing educational, clinical and policy decisions on outcomes of the SDQ.