Make It Short and Easy: Username Complexity Determines Trustworthiness Above and Beyond Objective Reputation

Area of Science:

• Consumer Psychology
• E-commerce Behavior
• Social Cognition

Background:

• Consumer trust is crucial for online transactions.
• Seller reputation is often inferred from various cues.
• Username characteristics may influence perceptions of trustworthiness.

Purpose of the Study:

• To investigate the impact of username complexity on consumer trust in e-commerce.
• To determine if username pronounceability and length independently affect perceived seller trustworthiness.
• To explore the underlying psychological mechanisms and alternative explanations for these effects.

Main Methods:

• Conducted 10 studies with 608 participants evaluating eBay seller profiles.
• Manipulated username complexity (pronounceability, length) and product description readability.
• Tested alternative explanations including seller origin, username generation method, and profile age.

Main Results:

• Sellers with easy-to-pronounce or short usernames were rated as more trustworthy.
• These effects persisted even when objective seller reputation information was available.
• Participants could not consciously correct for the influence of username complexity.
• Readability of product descriptions also influenced trust.

Conclusions:

• Username simplicity is a powerful, often subconscious, driver of consumer trust in online sellers.
• Processing fluency, influenced by username characteristics, plays a key role in trust formation.
• Interventions to enhance trust should consider both seller identifiers and product information clarity.