Interference and mirror position.

Canadian Journal of (Experimental) Psychology: The first 70 years.

“…Her article applied the Rorschach test to an anthropological study of personality in the “peasant society” of l’Isle Verte, on the south shore of the Saint Lawrence River on the Gaspé peninsula in Quebec. Together with Cook’s (1947) article, these two articles certainly represent the broad range of the research published in CJP in its early years 1…”

“…The first experimental report actually had to await the third issue. Cook (1947) reported on an experiment in which participants learned to trace a pattern reflected in a mirror. When the mirror position remained constant, he observed a smooth, negatively accelerated improvement with practice in the control group.…”

Learning a motor task under varied display conditions.

“…In a comparison between instrument and contact flight performance, Ritchie and Michael (1955) found that while instrument flight was a more difficult task to learn, it produced higher transfer to contact flight than prior training on contact produced for instrument flight. In mirror-tracing experiments, mirror reversal after initial training produced negative transfer if 5s ignored what Cook (1947) called "kinesthetic memory" of the path and attended to visual cues. Bilodeau (1952) found strong evidence that two similar motor tasks 65 produced different kinds of learning as a result of differences in the character of the feedback information.…”