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Multimedia instruction: comparison of effectiveness of 50% variable-ratio demonstration versus interactive learner-directed design

1 May 1995


The purpose of this study was to compare the effectiveness of 50% variable-:ratio demonstration and interactive learner-directed multimedia instructional designs in teaching adults a gross motor skill, the Proprioceptive Neuromuscular' Facilitation (PNF) patterns. Because physical therapists may be involved in the development of multimedia instruction programs for teaching gross motor skills, it is important to test how different designs affect outcomes. Sixteen subjects (X = 26.8, SD = 8.0) were divided into two groups; one group received 50% variable:-ratio demonstration, the other group received interactive learner-directed multimedia instruction. Movement skill was assessed by two performance analyses: immediately following instruction and two days after instruction. The results showed that 50% variable-ratio demonstration instruction and interactive learner-directed instruction may be equally effective multimedia designs for teaching a particular gross motor skill.


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