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Table 1 Study measures: inter-item correlation ranges (IICR), Cronbach’s alpha, and whether the measure was used during pre-test and/or post-test (N/A not applicable)

From: Teleological reasoning, not acceptance of evolution, impacts students’ ability to learn natural selection

Measures Pre-test Post-test IICR Alpha
Final semester grade: students’ final percent grade in the evolutionary medicine course N/A N/A N/A N/A
Parental educational level (two items): mean of mothers’ and fathers’ highest educational levels (scale 1–5: some high school to graduate school)   N/A N/A
Cultural/attitudinal measures
 Parental attitude towards evolution (two items): mean agreement (scale 1–5: disagree to agree): what attitude do you think your (1) father or guardian has toward evolution? (2) mother or guardian has toward evolution?   N/A N/A
 Student religiosity (one item): how important is religion in your life? (scale 1–4: not important to very important)   N/A N/A
 Student acceptance of evolution (three items): mean agreement (scale 1–5: disagree to agree): do you think that evolutionary principles explain the origins of (1) reptiles (2) humans (3) viruses?   .60–.78 .86
Cognitive measures
 Prior educational exposure (one item): how much have you learned about evolution? (scale 1–5: not much to a lot)   N/A N/A
 Teleological reasoning (three items): mean agreement (scale 1–5: disagree to agree): (1) natural selection shapes health and longevity; (2) evolutionary changes arise in response to the needs of organisms to adapt to its environment; (3) natural selection shapes healthy inclinations .26–.45 .60
 Natural selection understanding (20 items): CINS, multiple choice test in which participants select the best answer out of four responses (score = total number correct) N/A .71