In the experiments by Craik and Tulving (1975), words were presented to subjects and different tasks or questions about the words (Is it in bold face? Does it rhyme with horse?) were used to

Test decoupling time spent during encoding and LOP

Explanation:

In this experiment the conclusion was that semantically processed words are more accurately recalled when they involve deep processing, on the other hand, phonemic and visually processed words are less accurately recalled.

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