Verbal suggestion and relaxation

INTERVENTION: This randomized controlled experiment involves four conditions, in which: (1) a verbal suggestion considering the effectiveness and working mechanisms of relaxation exercises is provided, without performing the relaxation exercises, (2) relaxation exercises are performed and a verbal suggestion considering the effectiveness and working mechanisms of relaxation exercises is provided, (3) relaxation exercises are performed without providing a verbal suggestion, and (4) puzzles were performed in a control condition. CONDITION: Verbal suggestion, Acute stress response, Relaxation ; ; PRIMARY OUTCOME: The primary study outcome is self‐reported state anxiety, as measured by the 6‐item Shortened State‐Trait Anxiety Inventory State version. SECONDARY OUTCOME: 1. Self‐reported psychological outcome measures ; ; 2. Heart rate and skin conductance ; ; 3. Cortisol and alpha amylase ; INCLUSION CRITERIA: 1. Between 18 and 35 years old 2. Good understanding of written and spoken Dutch