The present study examined the effects of pleasantness expressed in verbal
messages on their perceived deceptiveness. The hypothesis was that pleasant
messages are perceived as less deceptive than neutral or unpleasant ones.
To test the hypothesis, three types of messages were constructed: pleasant,
neutral, and unpleasant. Sixty-seven university students answered the ques
tionnaire in which they rated, on seven-point semantic differential scales,
perceived deceptiveness in one of the three types of messages. The result
indicated that the unpleasant messages were perceived as the most deceptive
, while the pleasant ones the least deceptive. The computer program "GPOWER
" was used in order to obtain appropriate sample size.