Mokken scaling of the Attitudes to Ageing Questionnaire with items ordered according to their mean score (n = 802).

(-) used to indicate that analyses reverse-scored these items.DNS = did not scale.AAQ Factor = Factor as derived in original factor analyses [12].For mean scores, scores are on Likert scale, 1 = strongly disagree, 3 = neither agree nor disagree, 5 = strongly agree; a high score indicates a more negative attitude towards ageing.Mokken Scale 1: Vitality/Person focussed ageing: Hs = 0.37; Rho = 0.80; p = 0.00012; HT = 0.23.Mokken Scale 2: Legacy/Social value: Hs = 0.46; Rho = 0.74; p = 0.00031; HT = 0.31;Mokken Scale 3: Exclusion/Social role: Hs = 0.39; Rho = 0.78; p = 0.00047; HT = 0.07.