The SCOFF is a screening tool for EDs and was employed in the current sample to detect potential participants with psychopathological tendencies toward AN. It contains five questions addressing core features of AN and bulimia nervosa. In this study, we used German translations previously validated by Berger et al. [46] and Richter et al. [47]. The internal consistencies in German samples varied between α = .45 and α = .66 [46, 47].

The SCID is a structured clinical interview used to diagnose DSM-IV Axis I disorders. In the current sample it was used for the diagnosis of AN and comorbid mental disorders. The interrater reliabilities were satisfactory to good (0.61 ≤ ricc ≤ 0.83).

The EDI-2 is a questionnaire assessing ED pathology. It consists of 11 subscales, of which the following were considered relevant as they are closest to fat-phobic psychopathology and used for further analyses in this study: body dissatisfaction, bulimia and drive for thinness. Items are rated on a six-point Likert scale from never (1) to always (6), and sum values were calculated as subscale scores. Internal consistencies of the EDI-2 subscales used in the present study were good to excellent (.73 ≤ α ≤ .94).

As a structured interview, the EDE assesses specific ED pathology on four subscales: restraint, eating concern, weight concern, and shape concern. All four subscales were considered relevant and used for further analyses in this study. Items are rated on a seven-point Likert scale from feature is not present (0) to feature is present every day/ to an extreme degree (6), and mean values were calculated as subscale scores. In the current sample, internal consistencies for the subscales were good to excellent (.70 ≤ α ≤ .95).

This questionnaire assesses the level of depressive psychopathology. It consists of 21 items, each containing four statements varying in intensity or frequency, regarding the last two weeks. A total sum score was calculated for further analyses. In this study, the total score demonstrated an excellent internal consistency (α = .94).

The STAI serves to capture fear as a state (state anxiety) and fear as a trait (trait anxiety). The trait version of the scale (Trait Anxiety scale, STAI-T) contains 20 items, which are based on statements regarding how the participants generally feel on four-point rating scales estimating frequencies from almost never (1) to almost always (4). A total sum score was calculated for the analyses. In this study, the internal consistency of the STAI-T was excellent (α = .96).

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