The preceding chapters have examined particular features in a person’s life space that can create happiness or unhappiness. Those environmental characteristics have been placed in 12 principle cate-gories, which subcategories as illustrated in Table 8.1 (p. 239), and their links with subjective well-being (and to a lesser extent self-validation) have been explored. Although causal influences have been demon-strated, observed associations are usually of only moderate size, and environment account leave unexplained a great deal of between-person variation. In seeking to understand why some people are happier than others, we clearly need to go beyond a framework that is based only inputs from the environment.