Investigated was the readiness of fifth, seventh, and eighth graders trained to empirically gather data by manipulating objects and materials with their hands, and to transfer this skill to a problem situation outside the classroom. After one semester's training in the science process under investigation, the increase in the use of the strategy of self-directed manipulation was statistically insignificant in the test situation. Gifted children showed no higher incidence of empirical data gathering processes or transfer than children of "normal" range of IQ.; boys tended to manipulate objects to gain information more frequently than girls. (GR)