I believe Biomarkers, which are biological indicators of certain conditions or behaviors, can provide information about addictive tendencies and other predispositions that may affect one's gambling behavior and preferences. For example, some studies have shown that certain genetic markers may be associated with increased risk for developing problem gambling behaviors. Other biomarkers, such as those related to stress hormones or brain activity patterns, can also provide insights into individual gambling preferences, especially in relation to risk-taking and decision-making.