Retailers' Perceptions of FDA Tobacco Regulation Authority.

Objectives: Research is limited on tobacco retailers' perceptions of the Food and Drug Administration's (FDA) tobacco regulatory authority overall, and less exists related to retailers in predominantly African-American or other racial/ethnic neighborhoods. We assessed differences in perceptions of the FDA's tobacco regulatory authority and barriers to compliance among retailers in African-American and non-African-American neighborhoods in Los Angeles, California.

Methods: Overall, 700 tobacco retailer interviews assessed demographic characteristics and perceptions of the FDA.

Communication Delays Impact Behavior and Performance Aboard the International Space Station.

Introduction: Long-duration space explorations will involve significant communication delays that will likely impact individual and team outcomes. However, the extent of these impacts and the appropriate countermeasures for their mitigation remain largely unknown. This study examined the feasibility and acceptability of utilizing the International Space Station (ISS) as a research platform to assess the impacts of communication delays on individual and team behavior and performance.