 During this time he chaired and sat on many committees and held many visiting positions at The Laboratory of Human Development at Harvard University; at Churchill College, Cambridge; at the University of Copenhagen; and at the Universities of Essex, Princeton and Chicago.He worked on many leading projects connected with sexuality including the President's Commission on Obscenity and Pornography; chaired the SSRC-Ford Foundation committee on Sexuality Fellowships; and was a member of the National Research Council’s CBASSE committee on the HIV-AIDS epidemic.In his retirement, he moved with his (second) wife, Cathy Greenblat, the sociologist and photographer, first to Nice and latterly to Palm Springs.