items_ecpe              Examination for the Certificate of Proficiency
                        in English (ECPE) Item Responses
items_fractions         Fraction Subtraction and Addition Assessment
                        Item Responses
items_matrix_reasoning
                        Experimental Matrix Reasoning Test Item
                        Responses
items_narcissistic_personality_inventory
                        Narcissistic Personality Inventory Item
                        Responses
items_ordered_eclsk_atl
                        Subset of Early Childhood Longitudinal Study,
                        Kindergarten (ECLS-K)'s Approaches to Learning
                        Item Responses
items_probability_part_one
                        Elementary Probability Theory Assessment Item
                        Responses
items_revised_psvtr     Revised PSVT:R Item Responses
items_spm_ls            Last Series of the Standard Progressive
                        Matrices (SPM-LS) Item Responses
items_taylor_manifest_anxiety_scale
                        Taylor Manifest Anxiety Scale Item Responses
qmatrix_ecpe            Examination for the Certificate of Proficiency
                        in English (ECPE) Expert-Derived Q matrix
qmatrix_fractions       Fraction Subtraction and Addition Assessment
                        Expert-Derived Q Matrix
qmatrix_oracle          Oracle Q Matrices
qmatrix_probability_part_one
                        Elementary Probability Theory Assessment
                        Expert-Derived Q Matrix
strategy_oracle         Strategy Oracle Sets
