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Past work has demonstrated that presenting statistical information in a foreground-background icon array can improve risk understanding, reduce decision-making biases, and decrease the salience of low-probability risks. In the present study, we assess whether presenting readily available gambling information within a foreground-background icon array influences individuals' gambling-related judgments (e.g., their perceived likelihood of winning a prize). Across two experiments (N = 1151), we find that using icon arrays to present gambling information reduces the appeal of scratch card games. That is, participants presented with gambling information in a foreground-background icon array, as opposed to a non-graphical numerical format, reported feeling less likely to win a prize, less excitement to play, and less urge to gamble on a scratch card game presented in a hypothetical gambling task. Overall, we conclude that presenting gambling information in an icon array format represents a simple yet promising tool for correcting gamblers' often overly-optimistic perceptions and reducing the appeal of negative expected value scratch card games., (© 2022. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)

In the domain of scratch card gambling, "pushes" refer to outcomes in which a prize is won that is equal to the cost of a scratch card game. Despite resulting in no net monetary gain, these outcomes are categorized as wins by lottery operators, effectively inflating published scratch card information (e.g., posted odds of winning). Additionally, the experience of obtaining a push shares similarities (e.g., the revealing of matching symbols) with the experience of obtaining a win and thus may be experienced similarly to wins by gamblers. Across four studies (N = 1502), we examined the impact of push outcomes on participants' perceptions of scratch card games. In Studies 1 and 2, participants reported feeling more likely to win, more excitement to play, and a stronger urge to gamble when presented with a scratch card that categorized push outcomes as wins compared to when presented a scratch card that did not categorize these outcomes as wins. In Study 3, participants experiencing a push outcome prior to a loss reported feeling more likely to win compared to those not experiencing a push outcome yet experiencing the same net monetary loss. In Study 4, push outcomes were found to elicit more excitement and a stronger urge to gamble compared to losses but less excitement and a weaker urge to gamble compared to wins. Overall, the present investigation suggests that push outcomes, a prevalent feature of scratch card games, can bias gambling-related judgments and increase the appeal of scratch card games., (© 2022. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)

Previous work has demonstrated that peoples' gambling-related judgments (e.g., perceived likelihood of winning) are often biased by non-diagnostic unclaimed prize information (i.e., the number of prizes still available to be won) resulting in non-optimal scratch card preferences. Another line of research suggests that people make less biased decisions (e.g., are less affected by the framing of a gamble) when using a foreign language. In the current study, we investigated whether using a foreign language (as opposed to one's native language) reduced the biasing effects of unclaimed prize information and consequently led to more optimal scratch card preferences. Across three experiments (N = 409), we found that people were equally biased by unclaimed prize information regardless of whether they completed our scratch card gambling task in their native (Polish) or foreign (English) language. In conclusion, it appears that using a foreign language does not help people be less biased in utilizing gambling-related information, and consequently does not lead to more optimal scratch card preferences.

The domain of gambling is rife with both diagnostic and non-diagnostic information. Previous studies examining scratch card gambling have demonstrated that people are often biased by intuitively appealing, yet non-diagnostic information (i.e., unclaimed prize information). The current study investigated how varying the presentation format of a diagnostic piece of information (i.e., payback percentage) could influence participants' use of this information when in conflict with unclaimed prize information. We hypothesized that when payback percentage information was presented in a graphical, as opposed to a numerical format, participants would be better at ignoring unclaimed prize information and correspondingly have their preferences become congruent with the true value of the presented scratch cards. In Experiment 1 (N = 201), with payback percentage presented in a numerical format, participants displayed a non-optimal preference for cards with greater numbers of unclaimed prizes and lower payback percentages. This preference was reversed in Experiment 2 (N = 201) when payback percentage was presented in a graphical format. In conclusion, the results of the current study demonstrate how judgments in a scratch card gambling domain can be improved by simply changing the presentation format of a single piece of information.

Unclaimed prize information (i.e., the number of prizes still available to be won) is information commonly provided to scratch card gamblers. However, unless the number of tickets remaining to be purchased is also provided, this information is uninformative. Despite its lack of utility in assisting gamblers in choosing the most favourable type of scratch card to play, we hypothesized that unclaimed prize information would bias participants' judgments within a scratch card gambling context. In Experiment 1 (N = 201), we showed that participants are influenced by this information such that they felt more likely to win, were more excited to play, and preferred to hypothetically purchase more of the scratch card with the greatest number of unclaimed prizes. In Experiment 2 (N = 201), we attempted to ameliorate this bias by providing participants with the number of tickets remaining to be purchased and equating the payback percentages of all three games. The bias, although attenuated, still persisted in these conditions. Finally, in Experiment 3 (N = 200), we manipulated the hypothetical scratch cards such that games with the highest number of unclaimed prizes were the least favourable, and vice versa. As in Experiment 2, participants still favoured cards with greater numbers of unclaimed prizes. Possible mechanisms underlying this bias are discussed. In conclusion, across three experiments, we demonstrate that salient unclaimed prize information is capable of exerting a strong effect over judgments related to scratch card games.

Background and Aims: Scratch cards are a popular form of lottery gambling available in many jurisdictions. However, there is a paucity of research that examines associations between individual differences in thinking style, participation in scratch card gambling, and problem gambling severity., Methods: In three studies, we sought to examine the relationships among these variables in large, online samples of participants. Participants completed the Cognitive Reflection Test (CRT), the Problem Gambling Severity Index (PGSI), the Actively Open-Minded Thinking Scale, and self-reported their frequency of scratch card gambling., Results: Throughout all three studies, specific associations were reliably established. Specifically, negative associations were observed between participants' CRT and PGSI scores, as well as between participants' CRT scores and scratch card gambling frequency. In addition, we found a positive association between problem gambling severity and scratch card gambling frequency. Finally, problem gambling severity was shown to correlate positively with participants' willingness to pay for irrelevant information in a scratch card gambling scenario., Discussion and Conclusions: Overall, we observed that problem gambling severity is associated with an individuals' thinking style and scratch card gambling behavior. This study adds to the existing literature examining problem gambling, and highlights the role of thinking style in understanding gambling behavior and problematic gambling.