Abstract
Objective: To investigate the impact of decision making styles on mental health of working adults.
Methodology: This cross-sectional study with cluster sampling was conducted at National Institute of Psychology, Quaid-e-Azam University, Islamabad from September 24, 2017 to February 10, 2018. A sample of 300 adults working in different organizations (Male=150; Female=150) were selected with an age range of 20-60 years. English version of General Decision-Making Style Scale and Mental Health Inventory were used to assess decision making styles and mental health, respectively.
Results: Rational decision making style (β=.26, p<.01)was a strong positive predictor of mental health. However, avoidant decision making style (β=-.23, p< .01) was a negative predictor. Rational decision making style was positively related with anxiety, behavioral control, depression, positive affect and mental health. Avoidant decision making style was negatively related with the former mental health indicators.
Conclusion: Decision making styles have an effect on mental health of working adults particularly, rational and avoidant decision making styles.

Key words: Decision making styles, mental health, anxiety, depression, behavioral control, working adults.