Left-digit bias in self-reported height

Area of Science:

• Cognitive psychology
• Human behavior
• Adolescent health

Background:

• Left-digit bias is a cognitive phenomenon influencing numerical perception.
• Self-reported height is often inflated due to social desirability, with taller stature linked to perceived advantages.

Purpose of the Study:

• To investigate the association between left-digit bias and self-reported height in adolescents.
• To determine if left-digit bias affects height reporting accuracy.

Main Methods:

• Utilized data from an annual health survey of adolescents (grades 7-12).
• Analyzed self-reported height data for patterns indicative of left-digit bias.

Main Results:

• Male adolescents demonstrated a significant left-digit bias in reporting their height.
• Female adolescents did not exhibit a statistically significant left-digit bias in height reporting.

Conclusions:

• Left-digit bias influences self-reported height among male adolescents.
• Findings contribute novel evidence to the understanding of cognitive biases in self-reporting behaviors.