Schaffnit, S.B., Lynch, R., Spake, L., Sear, R., Sosis, R., Shaver, J., Alam, N., Towner, M., & Shenk M. (under review) Market Integration opens novel pathways to marital arrangements

Lynch, R., Schaffnit, S.B., Sear, R., Sosis, R., Shaver, J., & Shenk, M. (under review). Religiosity increases the size and kin density of women’s social networks in a country undergoing rapid market integration.

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Schaffnit, S.B., & Lawson, D.W. (2021). Married too young? The behavioral ecology of 'child marriage'. Social Sciences.

Schaffnit, S.B., Wamoyi, J., Urassa, M., Dardoumpa, M., & Lawson, D.W. (2021). “I have never seen something like that”: Discrepancies between lived experiences and the global health concept of child marriage in northern Tanzania. PLoS One.

Kilgallen, J., Schaffnit, S.B., Kumogola, Y., Galura, A., Urassa, M., & Lawson, D.W. (2021). Positive Correlation Between Women’s Status and Intimate Partner Violence Suggests Violence Backlash in Mwanza, TanzaniaJournal of Interpersonal Violence.

Lawson D.W., Schaffnit S.B., Kilgallen J.A., Kumogola Y., Galura A. & Urassa M. (2021). He for She? Understanding men’s support for women’s empowerment in northern Tanzania. Evolutionary Human Sciences.

Lawson, D.W., Schaffnit, S.B., Hassan, A., & Urassa, M. (2021). Shared interests or sexual conflict? Spousal age gap, women’s wellbeing and fertility in rural TanzaniaEvolution and Human Behavior.

Spake, L., Schaffnit, S.B., Sear, R., Shenk, M., Sosis, R., & Shaver, J.H. (2021). Mother's partnership status and allomothering networks in the United Kingdom and United States. Social Sciences.


Schaffnit, S.B., Wamoyi, J., Urassa, M., Dardoumpa, M., & Lawson, D.W. (2020). When marriage is the best available option: perceptions of opportunity and risk in female adolescence in Tanzania. Global Public Health

Lawson, D.W., Lynes, R., Morris, A., & Schaffnit, S.B. (2020). What does the American public know about ‘child marriage’? PLoS One.


Schaffnit, S.B., Hassan, A., Urassa, M., & Lawson, D.W. (2019). Parent-offspring conflict unlikely to explain 'child marriage' in northwestern TanzaniaNature Human Behavior.

Schaffnit, S.B., Urassa, M., & Lawson, D.W. (2019). ‘Child marriage’ in context: exploring local attitudes towards early marriage in rural Tanzania. Sexual and Reproductive Health Matters.

Birdthistle, I.,  Tanton, C., Tomita, A., de Graaf, K., Schaffnit, S., Tanser, F., & Slaymaker, E. (2019). Recent levels and trends in HIV incidence rates among adolescent girls and young women in high-prevalence countries: A systematic review and meta-analysis. Lancet Global Health.

Hassan, A., Schaffnit, S.B., Sear, R., Urassa, M., & Lawson, D.W. (2019). Fathers favor sons, mothers don't discriminate: a study of sex-biased parental care in northwest TanzaniaHuman Evolutionary Sciences.


Birdthistle, I., Schaffnit, S.B., Kwaro, D., Shahmanesh, M., Ziraba, A., Kabiru, C., Phillips-Howard, P., Chimbindi, N., Ondeng’e, K., Gourlay, A. Cowan, F., Hargreaves, J.,  Hensen, B. , Chiyaka, T.,  Glynn, J., & Floyd, S. (2018). Evaluating the impact of the DREAMS Partnership to Reduce HIV Incidence among Adolescent Girls and Young Women in four settings: A Study ProtocolBMC Public Health. 


Schaffnit, S.B. & Sear, R. (2017). Support for new mothers and the decision to have a second child in the United Kingdom: not all support is equalPopulation Studies

Schaffnit, S.B. & Sear R. (2017). Supportive families versus support from families: the decision to have a child in the Netherlands. ​Demographic Research

Sear, R., & Schaffnit, S. (2017). It's not just about the future: The present payoffs to behavior vary in degree and kind between the rich and the poorBehavioral and Brain Sciences

Lawson D. W., Schaffnit, S.B., Hassan, A., James, S. & Borgerhoff Mulder, M. (2017). Father absence but not fosterage predicts food insecurity, relative poverty and poor child health in northern TanzaniaAmerican Journal of Human Biology. ​


Stulp, G., Sear, R., Schaffnit, S.B., Mills, M., & Barrett, L. (2016). The reproductive ecology of industrial societies: the association between wealth and fertilityHuman Nature


Schaffnit, S. B. (2015). Intergenerational Support and Women's Fertility in High-Income Countries: An Evolutionary Analysis. PhD Thesis.


Schaffnit, S.B. & Sear, R. (2014). Wealth modifies relationships between kin and women’s fertility in high-income countriesBehavioral Ecology

Sheppard, P., Schaffnit, S.B., Garcia, J. R. & Sear, R. (2014). Fostering relations: first sex and marital timings for children raised by kin and non-kin carersEvolution and Human Behavior.


Logan, J. (2021). The Cost of Change. The Current. UCSB.

Logan, J. (2021). What men want. The Current. UCSB.

Logan, J. (2021). An age old question. The Current. UCSB.

Lawson, D.W., Schaffnit, S.B., and Urassa, M. (2020). Using mixed methods to correct stubborn misconceptions about child marriage. Nature Behavioral Sciences Forum.

Logan, J. (2020)  'Child marriage' misconceptions. The Current. UCSB.

Stark, L. (2019). Why daughters may choose early marriage. Nature Human Behavior.

Lawson, D.W. and Schaffnit, S.B. (2019) Distinguishing Reality from Stereotype in the End Child Marriage Movement. Nature Behavioral Sciences Forum.

Logan, J. (2019) Child marriage - coercion or choice? The Current. UCSB. 

Logan, J. (2019) What if 'child marriage' means older teens making choices? Futurity

Karim, S.S.A. and Baxter, C. (2019). ​HIV incidence rates in adolescent girls and young women in sub-Saharan Africa. Lancet Global Health