Theoretical and Factorial Validity of Shearer’s Revised LogicalMathematical Intelligence Scale and Its Relationship with Academic Achievement

The factorial validity of Logical Mathematical Intelligence Scale (LMIS) developed by Shearer (1994) was explored in this study by resorting to schema theory. To this end, its 17 interrogative sentences were rendered declarative and six heterogeneous alternatives offered for each sentence were reduced to four homogenous choices. The revised LMIS was then administered to 376 undergraduate and graduate students who had taken various courses offered in the English language. When the participants' responses were subjected to Principal Axis Factoring and Varimax with Kaiser Normalization five factors appeared showing that the cognitive domain of logical-mathematical intelligence measured by the LMIS consists of five latent variables representing mathematical, logical, witty, ingenious, and inquisitive genera. Correlating the scale and its factors with the students' GPA established a significant but negative relationship between the logical genus and academic achievement. The results are discussed and suggestions are made for future research.