Testing a daily smartphone-delivered intervention in individuals with work stress

INTERVENTION: Experimental condition: problem‐solving techniques, worry postponement, mindfulness exercises •Dose: daily, 5 times a day (between 9 AM – 11 PM) •Duration: 4 weeks (29 days) •Mode of administration: via an application on a smartphone Waitlist condition: no treatment CONDITION: Stress, Work load ; ; PRIMARY OUTCOME: •Implicit Positive and Negative Affect as measured with Implicit Positive and Negative Affect Test, time‐point: post‐intervention (i.e., 4‐weeks).; ; •Implicit stress as measured with the Implicit Association Test, time‐point: post‐intervention.; SECONDARY OUTCOME: •Implicit Positive and Negative Affect as measured with Implicit Positive and Negative Affect Test, time‐point: 2‐weeks. ; ; •Implicit stress as measured with the Implicit Association Test, time‐point: 2‐weeks. ; ; •Explicit positive and negative affect as measured with the four basic emotions, time‐point: 2‐weeks, post‐intervention. ; ; •Five Facet Mindfulness Questionnaire score, time‐point: 2‐weeks, post‐intervention. ; ; •Effort‐Reward Imbalance score, time‐point: post‐intervention ; ; •Trait worry, as measured by Penn State Worry Questionnaire, time‐point: 2‐weeks, post‐intervention. ; ; •Anxiety symptoms as measured by GAD‐7, time‐point: 2‐weeks, post‐intervention. ; ; •Depressive symptoms as measured by PHQ‐9, time‐point: 2‐weeks, post‐intervention. ; INCLUSION CRITERIA: Dutch speaking individuals who are employed, are 18 years or older, have an effort‐reward imbalance ratio of >1, and who have sufficient knowledge of how to work with a smartphone