Note: EPSY341 students do not need to know this information

Rulon Formula for Calculating Split-half Reliability

Divide the variance of the differences between each person's scores on the two half tests by the variance of the total scores. Subtract this answer from 1.

Del Siegle, Ph.D.
Neag School of Education - University of Connecticut
del.siegle@uconn.edu
www.delsiegle.com