Instructional materials designed to increase creative thinking abilities and language achievement were used in nine training conditions with children in grades 4, 5, and 6. Results indicated that treatment conditions were most effective at the 4th grade level, where at least one treatment was effective for all variables. At the 5th grade, two variables, verbal fluency and verbal originality, were unaffected. The materials were least effective at the 6th grade, where gains occurred on only three variables: nonverbal fluency, nonverbal flexibility, and verbal originality. At all grade levels, treatment conditions were generally more effective when involving either exercise or single component conditions. (Author/JD)