coded. He found that semantic dimensions such as taxonomic categories and semantic differentials are highly effective in PI release, whereas the physical characteristics of words, such as word length and the figure/ground differences in slide presentations of stimuli, are much less effective in PI release. There may be several dimensions along which a word needs to be encoded before it is memorized, and if the stimulus is withdrawn before complete encoding has taken place, this may interfere with recall, and may also make the word less effective for PI release. This means that word selection is an important factor when compiling word lists to be used in Brown-Peterson task experiments.
Lippman (????) failed to find release from PI using a series of trials in which the same words were presented, but in differing sequences: three words from three different semantic categories were presented either in a constant
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