Browsing by Author "Jokela, Markus"
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Item Antidepressant use among immigrants with depressive disorder living in Finland: A register-based study(2022) Kieseppa, Valentina; Markkula, Niina; Heidi, Taipale; Holm, Minna; Jokela, Markus; Suvisaari, Jaana; Tanskanen, Antti; Gissler, Mika; Lehti, VenlaItem Homophily in Personality Enhances Group Success Among Real-Life Friends(2020) Laakasuo, Michael; Rotkirch, Anna; Duijn, Max van; Berg, Venla; Jokela, Markus; David-Barrett, Tamas; Miettinen, Anneli; Pearce, Eiluned; Dunbar, RobinPersonality affects dyadic relations and teamwork, yet its role among groups of friends has been little explored. We examine for the first time whether similarity in personality enhances the effectiveness of real-life friendship groups. Using data from a longitudinal study of a European fraternity (10 male and 15 female groups), we investigate how individual Big Five personality traits were associated with group formation and whether personality homophily related to how successful the groups were over 1 year (N = 147–196). Group success was measured as group performance/identification (adoption of group markers) and as group bonding (using the inclusion-of-other-in-self scale). Results show that individuals’ similarity in neuroticism and conscientiousness predicted group formation. Furthermore, personality similarity was associated with group success, even after controlling for individual’s own personality. Especially higher group-level similarity in conscientiousness was associated with group performance, and with bonding in male groups.Publication Knocking on Heaven’s Door? Entrepreneurship, Firm Growth, and Health Risks(2025) Partanen, Jukka; Tenhiälä, Aino; Kautonen, Teemu; Jokela, Markus; Lerner, Daniel A.; McKelvie, AlexanderWe examine the physical health consequences to entrepreneurs of firm growth and decline. Using register-based panel data (2000–2021), we find that entrepreneurs and hired CEOs are, on average, healthier and live longer than individuals from a socio-economically similar random sample from the general population. However, our findings also reveal that entrepreneurs are more likely to fall ill during their tenure and die younger than hired CEOs. Importantly, our findings demonstrate that both cumulative exposure to growth and episodic, rapid declines in sales and in the number of employees are equally taxing for entrepreneurs and hired CEOs