The article below may contain offensive and/or incorrect content.
Traditional theories of decision making require that humans evaluate choice options independently of each other. The independence principle underlying this notion states that the relative choice probability of two options should be independent of the choice set. Previous research demonstrated systematic violations of this principle in decisions from description (context effects), leading to the development of various models explaining them. Yet, the cognitive processes underlying multi-alternative decisions from experience remain unclear. Furthermore, it is not known whether context effects also occur in such decisions, and existing learning models do not predict them. In three experiments, the similarity effect, compromise effect, and attraction effect were explored in a 3-armed bandit task with full feedback. Participants' behavior systematically violated the independence principle, although mostly not in line with past context-effect patterns in decisions from description. The observed similarity effect and the reversals of the compromise and the attraction effects can be explained by a similarity mechanism, according to which options with similar outcomes appear less attractive. We propose the accentuation-of-differences model that relies on this mechanism. We further validated the model in a fourth experiment in which we demonstrated a new violation of independence, the accentuation effect. Across all experiments, the model outperformed traditional reinforcement-learning models in describing the observed findings. Finally, the model's generalizability was confirmed using the Iowa gambling task. In summary, the present work is the first to demonstrate systematic violations of the independence principle in various decisions-from-experience designs and to offer a model to explain the observed phenomena. (PsycINFO Database Record (c) 2019 APA, all rights reserved)





Parent Site

Departments
Authors
Libraries
Current Articles
- Article Correctness Is Author's Responsibility: Scientific Meeting » Workshop: Gene-based Therapeutics for Rare Genetic Neurodevelopmental Psychiatric Disorders
- Article Correctness Is Author's Responsibility: Guiding gender-atypical kids through puberty
- Article Correctness Is Author's Responsibility: Pandemic worsens child mental health crisis
- Article Correctness Is Author's Responsibility: Being heard is more important to some people than following COVID-19 regulations
- Article Correctness Is Author's Responsibility: Workaholics at a greater risk of depression
- Article Correctness Is Author's Responsibility: Can kids have seasonal affective disorder?
- Article Correctness Is Author's Responsibility: Video » NIMH Expert Dr. Krystal Lewis Discusses Managing Stress & Anxiety
- Article Correctness Is Author's Responsibility: Scientific Meeting » NIMH Livestream Event: Managing Stress and Anxiety
- Article Correctness Is Author's Responsibility: A third of Americans don't see systemic racism as a barrier to good health
- Article Correctness Is Author's Responsibility: The challenge of pandemic fatigue is hitting people hard
- Article Correctness Is Author's Responsibility: How and why to take a break from the news
- Article Correctness Is Author's Responsibility: What brain imaging tells us about decluttering our minds
- Article Correctness Is Author's Responsibility: Blog Post » Showing Support for Basic Researchers
- Article Correctness Is Author's Responsibility: How to reduce news-related stress for better mental health
- Article Correctness Is Author's Responsibility: Five myths about loneliness
- Article Correctness Is Author's Responsibility: How to help someone struggling with suicidal ideation
- Article Correctness Is Author's Responsibility: Better sleep hygiene is crucial when you're anxious
- Article Correctness Is Author's Responsibility: How to remotivate kids for more distance learning
- Article Correctness Is Author's Responsibility: How to set goals you’ll actually achieve
- Article Correctness Is Author's Responsibility: To 'keep sharp' this year, keep learning