Structure-function fit underlies the evaluation of teleological explanations

Area of Science:

• Cognitive Science
• Philosophy of Biology
• Psychology of Science

Background:

• Teleological explanations, referencing purpose, are common in biology.
• Their compelling nature suggests underlying evaluation mechanisms beyond mere scientific validity.

Purpose of the Study:

• To investigate the psychological basis for the compelling nature of teleological explanations.
• To identify the key cue driving the acceptance of teleological reasoning.

Main Methods:

• Five experiments involving 852 participants.
• Evaluated explanations based on function information and mechanistic details.
• Assessed the role of structure-function fit under varying cognitive loads.

Main Results:

• Function information reduced reliance on mechanistic explanations.
• Structure-function fit emerged as the primary cue for evaluating teleological explanations.
• High structure-function fit increased acceptance of teleological explanations, irrespective of scientific accuracy and across domains.

Conclusions:

• Structure-function fit is a key psychological driver for accepting teleological explanations.
• This heuristic influences reasoning in biology and other domains.
• Understanding this cue provides insight into the evaluation of purpose-based scientific explanations.