TITLE A Comparison of the Effects of an Advanced Organizer and/or Behavioral Objectives on the Achievement of

ABSTRACT,The use of an advanced organizer (a generalizable, 'encompassing concept) prior to an individualized instructional sequence in a self-paced, audiotutorial learning format was accompanied by gains in individual unit-achievement and in retention by disadvantaged biology students. Although behavioral objectives generally were skown to make no significant difference when utilized in the same manner as the'advanced organizer, a significant increase in achieiement occurred when they were used. together. This increase might be attributed partly'to the use of the behavioral objectives. A series of three audiotutorial units in genetics covering topics in mitosis, meiosis, and chromosomal abnormalities composed the instructional materials. During the course of the six-week experimental periods all'subjects received audio tapes, study guides, 'visual aides, and tests. Achievement was measured by formative;-unit tests, a summative final test, and a summative retention test.&apos