ERIC Number: ED195573
Record Type: Non-Journal
Publication Date: 1979-Oct
Reference Count: N/A
Spatial Ability: Individual Differences in Speed and Level. Technical Report No. 9. Aptitude Research Project.
Lohman, David F.
Previous research on the nature of aptitude processes had ignored the important differences between speed and level of performance. However, investigations of the relationship between individual differences in speed and level suggest that speed of solving simple spatial tasks is largely independent of level attained on more complex spatial tasks. The present experiment was designed to investigate the relationships between speed, level, and complexity in individual differences in spatial ability. Thirty male high school and college students were selected to represent a wide range of individual differences in verbal ability and spatial ability. Subjects were required to match, rotate, combine, and combine and then rotate three to eight point polygons. Each subject was administered 216 items. Data were analyzed using regression, analysis of variance, and correlational techniques. Correlations between intercepts, slopes, predicted times at maximum difficulty, and level scores and reference constructs supported the basic hypothesis of speed-level independence. In particular, individual differences in speed of solving simple items were independent of both level on the task and reference abilities. Speed of solving complex items was strongly correlated with level on the task, but more highly correlated with verbal than spatial reference constructs. (Author/RL)
Publication Type: Reports - Research
Education Level: N/A
Sponsor: Advanced Research Projects Agency (DOD), Washington, DC.; Office of Naval Research, Arlington, VA. Personnel and Training Research Programs Office.
Authoring Institution: Stanford Univ., CA. School of Education.