Determined is the logical reasoning necessary to construct line graphs including a straight line with a positive or negative slope and an exponentially increasing curve. The responses of subjects (grades 6-12) were classified into one of nine categories fitting with Piagetian operational structures. (Author/YP)

Reports efforts and results associated with the development and validation of a test of graphing skills for grade seven through twelve science students. Concludes that the Test of Graphing in Science (TOGS) is a valid and reliable instrument. Also discusses TOGS value to the teacher and educational researcher. (ML)

Reviews a study that analyzed the inquiry-oriented matriculation tests of 12th-grade biology students (N=3650) in Israel for the purpose of finding the interrelationships among 21 process skills. Discusses the seven factors that emerged from factor analysis and indicates the theoretical and practical implications of the findings. (ML)

Reviews procedures followed in developing a set of science items for Chemistry, Physics, Biology, Geology content areas and examines the items' construct validity in relation to a specific technique of evaluation. Analysis supported the items' construct validity and viability for testing certain science skills at the secondary level. (ML)

Outlines a procedure used to develop a written diagnostic instrument to identify misconceptions and misunderstandings of the chemistry topic. Reports the characteristic data for the instrument, and student understanding of covalent bonding and structure. (Author/YP)

Discusses the complicating effects of ambivalence on the validity of science attitude measurement scales. Cites studies indicating that the positive and negative effects about a particular psychological object are not necessarily bipolar. Suggests the use of factor analysis to check dimensionality in instruments. (TW)

Describes a study designed to develop a systematic procedure for constructing a valid Likert attitude scale. Discusses the 15-step procedure that was produced. Reviews the resulting development of an instrument designed to test the attitude of teachers toward the use of microcomputers in the classroom. (TW)