This article introduces a bootstrap generalization to the Modified Parallel Analysis (MPA) method of test dimensionality assessment using factor analysis. This methodology, based on the use of Marginal Maximum Likelihood nonlinear factor analysis, provides for the calculation of a test statistic based on a parametric bootstrap using the MPA…

This paper reviews work on the representation of knowledge from within psychology and artificial intelligence. The work covers the nature of representation, the distinction between the represented world and the representing world, and significant issues concerned with propositional, analogical, and superpositional representations. Specific topics…

This study, which involved training four young adults with moderate or severe mental retardation on housekeeping and janitorial work skills, found that simulation instruction based on general case methodology can be used to teach complex sequences, that naturalistic instruction seemed more efficient than simulation instruction, and that neither…

An interactive videodisc-based simulation was used to train 3 students (ages 12-17) with moderate disabilities on locating and purchasing items in convenience store settings. The students improved in their effectiveness and efficiency of locating items in the simulated environment and showed some transfer of skills to natural environments. (JDD)