Ageism has been recognized as a global problem leading to poorer health, isolation, and workplace discrimination toward people based on their age. Consequently, there are several tools that measure levels and types of ageism with a focus on the quantification of degrees and types of ageism. While such quantification is valuable, this paper describes the development of an inventory, created over four stages, designed to foster introspective and collaborative thinking about age-directed values. In Stage 1, 34 items were identified through a comprehensive literature review. In Stage 2, the items were evaluated and revised via a focus group discussion. In Stage 3, the revised ASI was administered to a representative U.S. sample (N = 513). Based on factor and conceptual analysis, a revised version was tested on a second sample (N = 507) (Stage 4) and again revised. The final ASI consists of 35 age-related statements: 22 psychometrically linked to one of four domains, six related to identity, and seven that, although not aligned with statistical results, are conceptually important. Rather than provide an ageism score, the ASI is a tool for introspection and reflection about individual values and judgements about age which can lead to customized strategies to address potential age biases.

Sage Journals https://journals.sagepub.com/doi/10.1177/23337214231166215