1. Cognitive cooperation

   • David Sloan Wilson
   • John J. Timmel
   • Ralph R. Miller

   OriginalPaper Pages: 225 - 250

2. Hairstyle as an adaptive means of displaying phenotypic quality

   • Norbert Mesko
   • Tamas Bereczkei

   OriginalPaper Pages: 251 - 270

3. Relative digit lengths predict men’s behavior and attractiveness during social interactions with women

   • James R. Roney
   • Dario Maestripieri

   OriginalPaper Pages: 271 - 282

4. Romantic jealousy in early adulthood and in later life

   • Todd K. Shackelford
   • Martin Voracek
   • Richard L. Michalski

   OriginalPaper Pages: 283 - 300

5. Grandmothering in Cambridgeshire, 1770–1861

   • Gillian Ragsdale

   OriginalPaper Pages: 301 - 317