“…In the five years since the first work in metaanalysis was published, the methods developed and recommended have been applied repeatedly and in diverse areas. A few meta-analyses in the field of education include the following: modern versus traditional math instruction (Athappilly, 1980), process-oriented science instruction (Bredderman, 1979), mainstreaming of special education students (Carlberg, 1979), "inquiry oriented" science teaching (El-Nemr, 1979), teaching style and pupil achievement (Glass et al, 1977;Gage, 1978), social-psychological environments and learning (Haertel, Walberg & Haertel, 1979), individualized mathematics instruction (Hartley, 1977), effects of television on social behavior (Hearold, 1979), home environment and learning (Iverson & Walberg, 1979), psycho-linguistic training (Kavale, 1979), treatment of hyperactivity , racial desegregation and academic achievement (Krol, 1979), personalized college-level instruction (Kulik, Kulik, & Cohen, 1979), advance organizers (Ldten, Ames, & Ackerson, 1979), teachers' questioning style (Redfield & Rousseau, 1979), aesthetics education and basic skills (Smith, 1980), class-size and affective outcomes (Smith &Glass, 1979), motivation and achievement (Uguroglu & Walberg, 1978), socioeconomic status and academic achievement (White, 1976), relationship between attitude and achievement in science learning (Wdson, 1980), patient education programs in medicine (Posavac, 1980), correlation of auditory perceptual slull and reading , diagnostic/remedial instruction and science learning (Yeany & Miller, 1980), effects of direct versus open instruction (Peterson, 1978).…”