This document explores the psychology of adult development, focusing on age-related changes in memory processes, working memory, and friendships. It discusses the relationship between age and memory, describes working memory and its impact on cognitive decline, and identifies factors affecting memory in older adults. The document also provides insights into memory training strategies that can help improve memory in older adults. Additionally, it discusses the friendship between Jamil and Kahlid, highlighting the benefits, roles, and functions of close friends and age-related changes in friendships. Finally, it explains Jamil and Kahlid's relationship using the Convoy Model of Friendship and Social Support.