The purpose of this study was to investigate the effect of relative age on selected biomotoric skills of children in puberty period. The sample of this research consisted of 30 male and 30 female students who have been studying at primary schools and on 9 age period. Identity info was grounded on determining chronologic ages of participants. In…

Empathy is an important social skill and is believed to play an essential role in moral development (Hoffman, 2000). In the present longitudinal study, the authors investigated adolescents' development of perspective taking and empathic concern from age 13 to 18 years (mean age at Wave 1 = 13 years, SD = 0.46) and examined its association with…

The authors' previous work and the data reported in the preceding chapters of this monograph provide conclusive evidence of the persistent nature of the negative impact of early severe deprivation. Institutional deprivation, despite the good outcomes for many, was often associated with substantial impairment and disorder across a wide range of…