In the updated paper, work sample tests do not come up as important as they were in the original paper:
It appears that almost all of the validity of work sample
tests is captured by GMA measures, because the incremental
validity is essentially zero.
But work sample tests are a great mechanism when GMA cannot be used for legal or other reasons. The paper concludes with:
The research evidence summarized in this article shows
that different methods and combinations of methods have
very different validities for predicting future job
performance. Some, such as person-job fit, person-
organization fit, and amount of education, have low
validity. Others, such as graphology, have essentially no
validity; they are equivalent to hiring randomly. Still
others, such as GMA tests and integrity tests, have high
validity. Of the combinations of predictors examined, two
stand out as being both practical to use for most hiring
and as having high composite validity: the combination of
a GMA test and an integrity test (composite validity of
.78); and the combination of a GMA test and a structured
interview (composite validity of .76).
In the updated paper, work sample tests do not come up as important as they were in the original paper:
But work sample tests are a great mechanism when GMA cannot be used for legal or other reasons. The paper concludes with: