In this short contribution I introduce myself to the readership of the "International Journal of Developmental Science" by describing some high points in my scientific career, leading up to a major change in my perspective on the proper way to conduct empirical research in developmental science.

This paper presents observational and research evidence to refute two widely held beliefs about psychological development: the belief in predetermined development and the belief in the simultaneous development of all behavioral systems. Studies suggesting the plasticity of development through environmental deprivation and intervention are…