Complex sentence: This latter correlation rose to 0.72 after correction for range restriction, and the authors noted that there appeared to be a ceiling effect on the Raven's scores, which may have also suppressed the correlation.
Split into simpler sentences: This latter correlation rose to 0.72 after the authors performed a correction for range restriction calculation. They also noted that there appeared to be a ceiling effect on the Raven's scores which may have suppressed the correlation.