Intellectual function of girls with precocious puberty

Area of Science:

• Neuroscience
• Pediatrics
• Endocrinology

Background:

• Precocious puberty involves early onset of secondary sexual characteristics.
• Cognitive development, including IQ, may be influenced by hormonal changes during critical periods.
• The impact of precocious puberty on intellectual abilities requires further investigation.

Purpose of the Study:

• To compare the IQ of girls with precocious puberty to normal controls.
• To investigate potential differences in verbal and performance IQ.
• To explore the relationship between early pubertal development and cognitive function.

Main Methods:

• Compared IQ scores of 52 girls with precocious puberty to 51 age-matched controls.
• Included a small group of eight girls with fast puberty for comparison.
• Utilized standardized IQ assessments for verbal and performance scores.

Main Results:

• Girls with precocious puberty showed significantly higher verbal IQ than controls.
• No significant difference in performance IQ was observed between groups.
• Verbal IQ distribution in precocious puberty was skewed towards higher scores, particularly above 110 and 130.

Conclusions:

• Early hormonal changes in precocious puberty may positively influence verbal cognitive development.
• Results suggest a potential role of sex hormones in brain development, possibly affecting the left hemisphere.
• Fast puberty did not show similar cognitive alterations, highlighting the specificity of precocious puberty's effects.