The less-is-better effect: a developmental perspective.

Area of Science:

• Cognitive Psychology
• Developmental Psychology
• Behavioral Economics

Background:

• The less-is-better effect describes a bias where smaller, qualitatively superior options are overvalued compared to larger, quantitatively superior but qualitatively inferior ones.
• This effect is observed in adults and chimpanzees, particularly when options are evaluated separately, and is often explained by the evaluability hypothesis.

Purpose of the Study:

• To investigate the developmental trajectory of the less-is-better effect in children aged 3 to 9 years.
• To determine if young children exhibit this bias in a joint evaluation task.

Main Methods:

• A joint evaluation task was designed presenting children with two options: one quantitatively larger but qualitatively inferior, and another quantitatively smaller but qualitatively superior.
• Children aged 3 to 9 years participated in the study, making choices between these presented options.

Main Results:

• Children across all age groups demonstrated the less-is-better bias.
• Participants consistently preferred the smaller, qualitatively superior option over the larger, qualitatively inferior alternative.

Conclusions:

• The less-is-better effect is present in young children during joint evaluations.
• Children's decision-making in joint evaluations appears to be guided by salient features rather than objective quantity or value.