A 1996 meta-analysis of the results of 133 research studies on educational technology from 1990 through 1994 revealed all of the following except ________.
◦ positive changes in the learning environment evolve over time and do not occur quickly
◦ educational technology has positive effects on student attitudes
◦ the effectiveness of educational technology is constant across all types of instructional design and student grouping
◦ educational technology has a significant positive impact on achievement in all subject areas