The present experiment was designed to measure the effects of two psychological variables upon both the subjective probability and overall appeal of lottery gambling games. Results confirmed the hypothesis that the structure of the gamble (conjunctive, simple, disjunctive) affected the subjective probability of winning. The familiarity of the game's format did not affect the subjective probability estimates. However, format did affect the game's overall appeal. A comparison of the results for student and non-student subjects suggests that the variations in the design of state lottery games may differentially affect participation among various segments of the population.
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