The present study examined the effects of instructional and motivational self-talk on handball performance using a novel task (nondominant arm) and a learned task (dominant arm) in primary school students. Participants were randomly assigned into two experimental groups (instructional and motivational) and one control group. The results revealed that for both tasks instructional and motivational self-talk groups improved their performance significantly in comparison with the control group and that for the nondominant arm instructional self-talk had a larger effect compared with motivational self-talk. The results suggest that instructional self-talk in the form of external focused cues may be more beneficial in the early stages of learning.