When Canadian Researchers Zelazo and Colleagues (1993) Had One Group

Multiple Choice

When Canadian researchers Zelazo and colleagues (1993) had one group of infants practise stepping, a second group practise sitting, and a control group that did not practise either stepping or sitting, they found infants who practised

A) either sitting or stepping improved in both sitting and stepping.
B) either sitting or stepping did no better than infants in the control group in either sitting or stepping.
C) sitting improved their sitting ability only and infants who practised stepping improved their stepping ability only.
D) sitting improved their stepping ability only and infants who practised stepping improved their sitting ability only.