Signal detection theory (SDT) parameters can describe a learner's ability to discriminate (d[prime symbol]) normal from abnormal and the learner's criterion ([lambda]) to under or overcall abnormalities. To examine the serial changes in SDT parameters with serial exposure to radiological cases. 46 participants were recruited for this study: 20…

Findings were: it did not matter whether the seriation involved the hues used in subsequent tasks or other hues; the presence or absence of reinforcement during perceptual pretraining did not affect pretraining, training, or transposition behavior; and seriation pretraining produced increased transposition in the intermediate-hue problem.…

Use of diagrams and three-dimensional aids in teaching laboratory techniques of tooth reduction was evaluated. The visual aids were found to be useful, but little difference was found in the effectiveness of two- and three-dimensional aids, possibly because two-dimensional aids provided step-by-step instructions while three-dimensional models did…