Sex ratio effects on reproductive strategies in humans

by Ryan Schacht, Monique Borgerhoff Mulder
Published 2015-01-01

Are We Monogamous? A Review of the Evolution of Pair-Bonding in Humans and Its Contemporary Variation Cross-Culturally

by Ryan Schacht, Karen L. Kramer
Published 2019-07-01

Patterns of Family Formation in Response to Sex Ratio Variation.

by Ryan Schacht, Karen L Kramer
Published 2016-01-01

Patterning of Paternal Investment in Response to Socioecological Change

by Ryan Schacht, Ryan Schacht, Helen E. Davis, Helen E. Davis, Karen L. Kramer
Published 2018-10-01

Sex ratios at birth vary with environmental harshness but not maternal condition

by Ryan Schacht, Douglas Tharp, Ken R. Smith
Published 2019-06-01

Effects of family planning on fertility behaviour across the demographic transition

by Karen L. Kramer, Joe Hackman, Ryan Schacht, Helen E. Davis
Published 2021-04-01

The role of dispersal and school attendance on reproductive dynamics in small, dispersed populations: Choyeros of Baja California Sur, Mexico.

by Shane J Macfarlan, Ryan Schacht, Eric Schniter, Juan José Garcia, Diego Guevara Beltran, Jory Lerback
Published 2020-01-01

Frail Males on the American Frontier: The Role of Environmental Harshness on Sex Ratios at Birth across a Period of Rapid Industrialization

by Ryan Schacht, Mike Hollingshaus, Heidi Hanson, Shane J. Macfarlan, Douglas Tharp, Tim Bruckner, Ken R. Smith
Published 2021-08-01