The purpose of this study was to analyze on the relationship between parental support and
autonomous motivation by using Korean Education Longitudinal Study (KELS) data collected from
2005 to 2010. The participants of this study were 4,025 students who responded at all of the
waves 2, 3, and 5 of the 2005 KELS middle school panel. Based on the selected data,
Autoregressive Cross-lagged Model (ARCLM) was used to examine the relationship of factors and
multi-group analysis was used to examine the group differences in relationship of factors.
The results of the research were as follows: First, parental support explained significantly
autonomous motivation. Second, autonomous motivation also highly influenced parental support.
This study noticed both parental support and autonomous motivation have highly autoregressive
and cross- lagged effects. And third, there were group differences according to changes in
achievement level. That is, some groups had different patterns in cross-lagged effects from
parental support to autonomous motivation. Fourth, some groups according to changes in
achievement level also had different patterns in cross-lagged effects from autonomous motivation
to parental support. Based on these findings, we discuss the implications of this study.