===== Scale  index construction and assessment =====
{{topic>scale index typology item item_wording response_category answer_category likert_scale pilot_study scale_construction think-aloud_protocol scale_construction item_analysis item_trace_lines summative_scale sum_score total_score item_means item_variance_and_standard_deviation item-total_correlation item-rest_correlation guttman_scale factor_analysis factor_loading factor dimension rotation communality eigenvalue kaiser's_criterion scree_plot elbow_criterion orhogonal_rotation varimax_rotation non-orthogonal_rotation oblimin exploratory_factor_analysis confirmatory_factor_analysis scoring_rule_in_factor_analysis +research_methods:video}}

===== Assignments =====

{{topic>scale index typology item item_wording response_category answer_category likert_scale pilot_study scale_construction think-aloud_protocol scale_construction item_analysis item_trace_lines summative_scale sum_score total_score item_means item_variance_and_standard_deviation item-total_correlation item-rest_correlation guttman_scale factor_analysis factor_loading factor dimension rotation communality eigenvalue kaiser's_criterion scree_plot elbow_criterion orhogonal_rotation varimax_rotation non-orthogonal_rotation oblimin exploratory_factor_analysis confirmatory_factor_analysis scoring_rule_in_factor_analysis +research_methods:assignment}}