Distinctive words elicit the P300 component of the
event-related brain potential, and are also likely to
be recalled. Previous studies have shown that the larger
the P300 elicited by distinctive words, the more likely
it is that those words will be recalled. The present study
addressed whether this relationship is affected by the
manner in which distinctiveness is induced. Distinctiveness
was manipulated either by varying the size of the characters
in which a word was displayed, or by surrounding the word
with a frame at close or far distance. All distinctiveness
attributes resulted in improved recall performance. The
words whose size was distinctive elicited a large P300,
and P300 amplitude was larger for subsequently recalled
words. The frame attributes elicited a small P300, and
the amplitude of these P300s was not correlated with subsequent
recall performance. Instead, a frontal slow wave was correlated
with subsequent recall performance in the far frame group.
It is concluded that the relationship between P300 amplitude
and subsequent recall depends on the type of distinctiveness
attribute, and should therefore not be ascribed to a generalized
effect of distinctiveness on memory encoding processes.