Partial and semi-partial correlation coefficients (R code)

R code to calculate semi-partial and partial correlation coefficients.

Semi-partial correlation is calculated using Cohen and Cohen (1983, p89, equation 3.3.8).

Partial correlation is calculated using Cohen and Cohen (1983, p91, equation 3.3.11).

Cohen, J., & Cohen, P. (1983). Applied Multiple Regression/Correlation Analysis for the Behavioral Sciences. Hillsdale, NJ: Erlbaum.