P. O'Brien

The Rajneesh sannyasin community in Fremantle

P. O'Brien, 2008 .

The high incidence of reading disability in twin boys and its implications for genetic analyses.

M. Prior, D. Hay, P. O'Brien, 1984, Acta geneticae medicae et gemellologiae.

Birthweight differences, the transfusion syndrome and the cognitive development of monozygotic twins.

D. Hay, P. O'Brien, 1987, Acta geneticae medicae et gemellologiae.

The La Trobe Twin Study: a genetic approach to the structure and development of cognition in twin children.

D. Hay, D A Hay, P J O'Brien, 1983, Child development.

Early influences on the school social adjustment of twins.

D. Hay, P. O'Brien, David A. Hay, 1987, Acta geneticae medicae et gemellologiae.

The role of parental attitudes in the development of temperament in twins at home, school and in test situations.

D. Hay, P. O'Brien, 1984, Acta geneticae medicae et gemellologiae.