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    Longitudinal Analyses with questionnaire with varying items per wave

    Hi all, For my thesis I am conducting a longitudinal analyses (5 waves) on antisocial behavior measured with the ASBQ. Now I have a different amount of items per wave, because they included items that were more age appropriate per wave. This results in: T1 (31 items), T2 (26 items), T3 (28...
  2. F

    Is only 1 item in 1 factor possible (factor analysis)

    I have three factors, of which factor 1 and 2 have several items loading on them. However, factor three has only 1 item. Is this possible or is it better to rerun the analysis and choose for only 2 factors??? In that case 2 items would not be present in any factor. I hope someone can help...