Professor DeHaan teaches Marriage and Family, Lifespan Development, Mental Health in the Classroom, and supervises the internship practicum. She received her bachelor’s degree in New Mexico, and her masters and PhD from Purdue University in child development with an emphasis on adolescence (1997). Prior to coming to Calvin, she taught for eight years at North Dakota State University in the department of child development and family science. She has recently been working on a federally-funded research project examining rural alcohol use in the middle school years, finding that rural communities do contribute to adolescent drinking, above and beyond family and peer influences. Her research interests include identity development in adolescence, rural adolescent alcohol use and faith and religious development in adolescence and emerging adulthood.

Read more about the faith and adolescence research Professor De Haan and Professor Yonker are working on. 

Curriculum vita


  •  2001-present Associate Professor of Psychology, Calvin College
  •  1994-2001 Associate Professor of Child Development and Family Science, North Dakota State University
  •  1990-1993 Research Assistant, Generativity during Mid-life, Purdue University
  •  1989-1990 Research Assistant, NIDA Project for Drug Use and Family Therapy, Purdue University 


  • 1994  Doctor of Philosophy, Purdue University, Department of Child Development and Family Studies, Specialization: Child development, Dissertation: Identity development among adolescents living in urban poverty.
  • 1990  Master of Science, Purdue University, Department of Child Development and Family Studies, Specialization:  Child Development, Thesis:  The relation between religious and political beliefs, and ideological identity development.
  • 1986  Bachelor of Arts, Eastern New Mexico University, Major: Speech Communication, magna cum laude

Courses taught


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Selected publications

  • DeHaan, L.G., Yonker, J., & Affholter, C. (under review). Conceptualization and measurement of religiosity for adolescents and emerging adults: Implications for developmental inquiry. Submitted to the Journal of Christianity and Psychology.
  • DeHaan, L.G. & and Boljevac, T. (2010). Alcohol Prevalence and Attitudes among Adults and Adolescents: Their Relation to Early Adolescent Alcohol Use in Rural Communities. Journal of Child and Adolescent Substance Abuse, 19, 223-243.
  • DeHaan, L.G. & and Boljevac, T. (2009). Alcohol use among rural middle school students: Adolescents, parents, teachers, and community leaders’ perceptions.  Journal of School Health, 79, 58-64.
  • DeHaan, L.G., Boljevac, T., & Schaefer, K. C. (2009).Parental relationships, economic hardship and rural community influences in early adolescent alcohol use. Journal of Early Adolescence, 29, 1-21.
  • Schaefer, K. C., DeHaan, L.G., & Boljevac, T. (under review). Adolescent Substance Use, Depression, Peer and Neighborhood Effects, and Unobserved Factors. Submitted to Journal of Public Economics.
  • Schaefer, K. C., DeHaan, L.G., & Boljevac, T. (under review). Measuring structural neighborhood effects: Using rural data to help decipher urban realities. Submitted to Sociological Methodology.