Sample Size in Practice
Unfortunately,
much of the literature that has attempted to address sample size guidelines
for EFA, particularly the studies attempting to dismiss subject to
item ratios, use flawed data. We will purposely not cite studies
here to protect the guilty, but consider it sufficient to say that
many of these studies either tend to use highly restricted ranges
of subject to item ratios or fail to adequately control for or vary
other confounding variables (e.g., factor loadings, number of items
per scale or per factor/component) or restricted range of N. Some
of these studies purporting to address subject to item ratio fail
to actually test subject to item ratios in their
analyses.
Researchers seeking guidance concerning sufficient ...
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