Good sleep quality and good mood lead to good working memory with age

A team of psychologists has found strong associations between working memory — a fundamental building block of a functioning mind — and three health-related factors: sleep, age, and depressed mood. The team also reports that each of these factors is associated with different aspects of working memory. Working memory is the part of short-term memory that temporarily stores and manages information required for cognitive tasks such as learning, reasoning, and comprehension.
Source: Science Daily, https://www.sciencedaily.com