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M C Detweiler

Publications and source records attributed to M C Detweiler.

2 recordsLinked to original sources

Training concurrent multistep procedural tasks.

This study assessed the effectiveness of traditional whole-task, pure part-task, and two forward-chaining part-task techniques to train rapidly presented concurrent multistep tasks. When training was equated for the total number of training trials, the forward-chaining technique that included practice with concurrent responses promoted as much transfer to whole-task conditions as whole-task training and more than traditional pure part-task training. When training was equated for the total number of response opportunities, the same concurrent forward-chaining technique also promoted superior whole-task transfer. Actual or potential applications of this research include suggestions that trainers should (a) structure concurrent-task training around critical intratask invariants to promote whole-task transfer, (b) realize that the concurrent-task training techniques that promote the best training performance may not promote the best transfer to whole-task situations, and (c) consider using forward-chaining techniques that provide practice with concurrent responses when training concurrent multistep tasks.

Analysis of Variance↗

Predicting age-related differences in visual information processing using a two-stage queuing model.

Recent work on age-related differences in some types of visual information processing has qualitatively stated that younger adults are able to develop parallel processing capability, while older adults remain serial processors. A mathematical model based on queuing theory was used to quantitatively predict and parameterize age-related differences in the perceptual encoding and central decision-making aspects of a multiple-frame search task. Statistical results indicated main effects for frame duration, display load, age group, and session of practice. Comparison of the full model and a restricted model indicated an efficient contribution of the encoding speed parameter. The best-fitting parameter set indicated that (1) younger participants processed task information with a two-channel parallel system, while older participants were serial processors; and (2) perceptual encoding had a large impact on age-related differences in task performance. Results are discussed with implications for human factors design principles.

Adult↗