International Journal of Research Studies in Psychology 2016 July, Volume 5 Number 3, 3-11 © The Author(s) / Attribution CC BY Helping among kin vs. non-kin: The role of psychological closeness Ferolino, Austin University of San Carlos, Philippines (aferolino@usc.edu.ph; austinferolino@hotmail.com) Labaclado, Richie University of San Carlos, Philippines (richielabaclado@gmail.com) Received: 3 January 2016 Revised: 20 February 2016 Accepted: 26 February 2016 Available Online: 29 February 2016 DOI: 10.5861/ijrsp.2016.1409 ISSN: 2243-7681 Online ISSN: 2243-769X OPEN ACCESS Abstract This study explored the patterns of helping directed to kin versus non-kin. The participants of the study were 270 undergraduate students recruited from online and regular class periods. Moderated regression analysis confirmed that psychological closeness moderates the relationship between perceived kinship status and willingness to help. Specifically, the relationship between closeness and helping increased for non-kin, but decreased for kin. Results may imply that psychological closeness is an important determinant in helping a non-kin, and less important in helping a kin. Keywords: psychological closeness; moderation; willingness to help