top of page

Midlife in the United States (MIDUS)

Updated 5/16/22

Country: United States

Study Design: Observational cohort with repeated measurements over time

Participant age range:

  • Early adulthood or midlife

  • Aging adults

Number of participants at baseline: 7,108

Year of initial enrollment: 1995

Number of data collection waves: 4

Measures of well-being:

  • Positive psychological well-being (overall / multidimensional)

  • Optimism

  • Positive affect

  • Purpose / meaning in life / ikigai

  • Life satisfaction

  • Mastery

  • Personal growth or self-acceptance

  • Healthy family functioning

Quantity of well-being measures (e.g., number of constructs, number of times of well-being was assessed:  High

Quality of well-being measures (e.g., were measures reliable and valid in the study population): High

Measures of physical health: 

  • Self-rated / questionnaire-based health

  • Self-report medical history or medication use

  • Measured anthropometrics, e.g., weight

  • Biomarkers

Access information: This dataset is available to all researchers. Researchers are not required to submit an application to access this data. There are no fees required to access this dataset.

Notable Citation: Morozink J, Friedman E, Coe C & Ryff C. (2010). Socioeconomic and psychosocial predictors of interleukin-6 in the MIDUS national sample. Health Psychology, 29(6), 626.

bottom of page