The State-Trait Anxiety Inventory (STAI) consists of two self-report scales, one measuring state anxiety and the other measuring trait anxiety (24). Each scale consists of 20 statements about how the respondent may feel, and they are asked to rate how strongly they agree ("very much so") or disagree ("not at all") with the item. The S-Anxiety scale evaluates how respondents feel "right now, at this moment", whereas the T-Anxiety scale evaluates how they feel "generally". This scale has been used extensively in research and clinical practice, and has been shown to be valid and reliable (24).