Implicit and explicit memory in pregnant women: an analysis of data-driven and conceptually driven processes

A study by Brindle, Brown, Brown, Griffith, and Turner (1991), reported that pregnant women showed impaired implicit memory (as measured by a stem completion task) in the presence of intact explicit memory. The present study was an attempt to replicate and extend this finding by employing a read/generate encoding manipulation across data-driven (word fragment completion and graphemic cued recall) and conceptually driven (semantic cued recall and category generation) tests. A total of 64 women (32 pregnant) were tested on both data-driven and conceptually driven tasks either directly or indirectly. No differences emerged between pregnant subjects and non-pregnant controls across tasks. Subjects experiencing their first pregnancy did report their memory in the previous 2 weeks as being considerably worse than normal.