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Published on: February 15, 2015
SES affects infant cognitive flexibility
Melissa W Clearfield1, Laura C Niman
1Whitman College, USA. clearfmw@whitman.edu
Insights
Socioeconomic status impacts infant cognitive flexibility development. Low-SES infants showed a delayed pattern in a perseverative reaching task compared to high-SES infants, suggesting potential long-term effects.
Area of Science:
- Developmental Psychology
- Cognitive Neuroscience
Background:
- Cognitive flexibility is crucial for information processing and behavioral adaptation.
- Poverty's effects on cognitive control are known in children but less understood in infants.
Purpose of the Study:
- To longitudinally investigate the development of cognitive flexibility in low-income infants.
- To compare cognitive flexibility development between low-socioeconomic status (SES) and high-SES infants.
Main Methods:
- A longitudinal study involving 32 infants (15 low-SES, 17 high-SES) tested at 6, 9, and 12 months.
- Cognitive flexibility assessed using a perseverative reaching task requiring location switching.
Main Results:
- High-SES infants followed a typical trajectory: random at 6 months, perseverative at 9 months, correct at 12 months.
- Low-SES infants exhibited a delayed pattern: correct at 6 months, random at 9 months, perseverative at 12 months.
Conclusions:
- Infant cognitive flexibility development is influenced by socioeconomic status.
- Delayed cognitive flexibility in low-SES infants may be linked to frontal cortex development.
Abstract:
Cognitive flexibility requires processing multiple sources of information and flexible adaptation of behavioral responses. Poverty negatively impacts cognitive control in young children, but its effects on infants are not well-understood. This study investigated longitudinally the development of cognitive flexibility in low-income infants. Thirty-two infants (15 low-SES, 17 high-SES) were tested at 6, 9, and 12 months of age. Cognitive flexibility was measured with a perseverative reaching task, where infants were taught to reach to one location and then asked to switch to a second location. High-SES infants replicated the typical developmental trajectory, reaching randomly at 6 months, perseverating at 9 months, and reaching correctly at 12 months. In contrast, the low-SES infants showed a delayed pattern, reaching correctly at 6 months, randomly at 9 months, and perseverating at 12 months. Links between cognitive flexibility and frontal cortex development are explored as a potential mechanism.
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