{"doi":"10.1093/geronb/gbaa113","title":"Measuring (Non)Essentialist Beliefs About the Process of Aging","abstract":"OBJECTIVES: We validated an aging mindset measure that captures beliefs about the process of aging. Specifically, we introduce a brief 4-item and an extended 10-item measure assessing (non)essentialist beliefs about aging. METHODS: We report findings from one longitudinal and one cross-cultural study, including young, middle-aged, and older adults between 18 and 88 years. The studies established (retest) reliability and measurement invariance as well as convergent and discriminant validity of the measures. RESULTS: First, in a longitudinal study (N = 124, 50-84 years) including 4 measurement occasions, we showed that the 4-item scale assessing (non)essentialist beliefs about aging has good retest reliability and convergent as well as discriminant validity (e.g., awareness of age-related change). Second, in a large cross-cultural sample (N = 1,080, 18-82 years) of participants in the United States and Germany, we established an extended 10-item measure of (non)essentialist beliefs about aging, providing support for a 2-factor structure as well as measurement invariance across samples within and across countries (the United States and Germany), age groups (young, middle-aged, and older adults), as well as across men and women. DISCUSSION: Our results highlight the importance of distinguishing between fixed versus malleable aging beliefs in research on aging and life-span development.","journal":"The Journals of Gerontology Series B","year":2020,"id":104139,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":24,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.8807,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2020-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":288057,"name":"Manfred Diehl","orcid":"0000-0002-2055-3839","position":1,"is_corresponding":false},{"id":506443,"name":"David Weiss","orcid":"0000-0002-7255-7428","position":0,"is_corresponding":true}],"reference_count":29,"raw_metadata":null,"created_at":"2026-07-18T22:43:22.755723Z","pmid":"32756954","pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}