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Trajectory of problem behaviours of Korean adopted children: using piecewise hierarchical linear growth modelling
Author(s) -
Ahn Jaejin,
Byun Mihee,
Kwon Jisung
Publication year - 2017
Publication title -
child and family social work
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.912
H-Index - 57
eISSN - 1365-2206
pISSN - 1356-7500
DOI - 10.1111/cfs.12264
Subject(s) - trajectory , linear growth , time point , multilevel model , longitudinal data , piecewise linear function , piecewise , range (aeronautics) , mathematics , psychology , demography , statistics , philosophy , physics , materials science , astronomy , mathematical analysis , geometry , sociology , composite material , aesthetics
This study examined the trajectory of problem behaviours in domestically adopted children in South Korea as they aged. This study used the Panel Study on Korean Adopted Children's longitudinal, three‐wave data (2006, 2008 and 2010). Although data were collected at three time points, our data consisted of six time points, which covered the 5–10 years age range of the adopted children at the time of survey. One hundred sixty‐four children were included in the analysis, 75 of whom contributed to one time point, 74 to two time points and 15 to three time points. The trajectory of the problem behaviours of adopted children was examined using a piecewise hierarchical linear growth model. Because the initial exploration of the data suggested non‐linear changes in behaviour problems over time, we split the growth trajectory into two time periods: Time 1 (5–7 years) and Time 2 (7–10 years). A two‐rate model was used to estimate separate slopes for the two time periods. Results showed that the externalizing and internalizing problems of adopted children have different trajectories. Internalizing problems did not show significant changes after 5 years of age, while externalizing problems increased until 7 years of age and decreased significantly thereafter.