“…Psychotherapists tend to believe their open clinical judgment—that is a diagnostic interview without using a diagnostic tool—is more useful than judgments based on structured diagnostic interviews in making correct diagnoses (Bruchmüller et al, ). However, considering that therapists are often confronted with multiple sources of information, as well as influenced by extraneous information (Bruchmüller & Meyer, ; Bruchmüller & Schneider, ; Meyer & Meyer, ; Wolkenstein, Bruchmüller, Schmid, & Meyer, ), open clinical judgment is error‐prone and can lead to diagnostic errors. For example, psychotherapists are more likely to diagnose attention‐deficit/hyperactivity disorder (ADHD) in a boy than in a girl after reading case vignettes that described several ADHD symptoms but stated that other ADHD criteria were not fulfilled (Bruchmüller, Margraf, & Schneider, ).…”