Gambling behavior is a complex phenomenon and represents an enigma for
most researchers and theoreticians. A sociocognitive theory of gambli
ng was recently formulated by Walker (1992) on the presence of erroneo
us perceptions held by the individuals while they gamble. Many studies
have confirmed that erroneous perceptions are dominant ill all indivi
duals involved in gambling activities and that the possibility of winn
ing money is the player's most important external motivation to play.
This study evaluated the effects of monetary incentive on the cognitiv
e activity of individuals and on the betting strategies used while pla
ying American roulette. It was hypothesized that the gr-enter the pote
ntial monetary gains, the greater the percentage of erroneous verbaliz
ations accompanied by increased monetary risk taking behavior. Results
indicate that the percentage of erroneous perceptions clearly outnumb
ered accurate perceptions, but that this percentage and risk taking be
havior were not influenced by monetary incentives. The theoretical and
practical implications of these results are discussed in relation to
the psychology of gambling.