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Memory performance, but not information processing speed, may be reduced during early pregnancy.

R H M de Groot1, G Hornstra, N Roozendaal

  • 1Department of Human Biology, Maastricht University, The Netherlands. RHM.deGroot@HB.unimaas.nl

Journal of Clinical and Experimental Neuropsychology
|August 13, 2003
PubMed
Summary

Early pregnancy may affect cognitive functions like memory. This study found lower intentional learning and semantic memory retrieval in pregnant women compared to non-pregnant individuals, though processing speed remained similar.

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Area of Science:

  • Cognitive Neuroscience
  • Neuropsychology
  • Human Physiology

Background:

  • Cognitive changes during pregnancy are often studied in late gestation.
  • Limited research exists on neurocognitive functioning in early pregnancy.

Purpose of the Study:

  • To investigate neurocognitive performance in early pregnancy (14 weeks gestation).
  • To compare cognitive functioning between pregnant women and matched non-pregnant controls.

Main Methods:

  • A controlled study involving 71 pregnant women and 57 non-pregnant controls.
  • Cognitive testing included measures of intentional learning (Verbal Learning Test) and semantic memory retrieval (Fluency Test).
  • Information processing speed was assessed using the Concept Shifting Test, Stroop test, and Letter Digit Substitution Test.

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Main Results:

  • Pregnant women showed lower performance in intentional learning and semantic memory retrieval compared to controls.
  • No significant differences were found in the speed of information processing between the groups.
  • Observed memory performance differences were modest.

Conclusions:

  • Early pregnancy may be associated with subtle impairments in specific memory functions.
  • Cross-sectional design limits definitive conclusions; longitudinal studies are recommended.
  • Further research is needed to determine the clinical significance of these cognitive changes during pregnancy.