The present study examines the relationship of adult attachment styles with personality and psychological and sociocultural adjustment. A sample of 847 first-generation Dutch emigrants filled out measures for attachment styles, the Big Five, and indicators of psychological and sociocultural adjustment. Positive relationships were found between Secure attachment on the one hand and psychological and sociocultural adjustment on the other. Ambivalent attachment was strongly negatively associated with psychological adjustment. Dismissive attachment was mildly negatively related to sociocultural adjustment. Significant relations were found between attachment styles and the Big Five dimensions, particularly Extraversion and Emotional Stability. The attachment scales were able to explain variance in sociocultural adjustment beyond that explained by the Big Five dimensions. Intercultural adjustment is discussed from a transactional view of personality. Copyright © 2004 John Wiley & Sons, Ltd.