Sex Differences in Children's Play (Stock Number: 33032DVD) Synopsis Investigates sex differences in play behavior in preschool and primary school children. Examines size of play groups, rank, style of play, and precourtship behavior during group sessions on the playground. c 1969 R. Parker and Daniel G. Freedman. Media Type: DVD Price: $55 Length: 27 min In stock items ship in 48 hours. Click to Purchase Now from PSU Media Sales! Contact Information: Penn State Media Sales Address: 237 Outreach Building University Park PA 16802-3899 Website: http://mediasales.psu.edu Email: MediaSales@outreach.psu.edu Phone: 1-800-770-2111 Fax: 814-865-3172 iSOAR developed by Jeff Luck/OIS