Table 2.
Pre-Diner, mean estimatea (actual)b | Post-Diner, mean estimatea (actual)b | Two-tailed t statistic | |
---|---|---|---|
| |||
1. You can see a gene just by looking at it with your eyes. | 70.6% (93.9%) | 72.8% (90.0%) | t(38) = 0.3, ns |
2. A gene is a piece of DNA. | 56.0% (90.4%) | 73.3% (91.3%) | t(39) = 3.8, P < 0.001 |
3. Healthy parents can have a child with an inherited disease. | 55.8% (97.6%) | 67.1% (96.3%) | t(39) = 2.8, P < 0.01 |
4. If you have a genetic risk for a certain disease, there is no way to avoid getting that disease. | 49.0% (92.7%) | 64.2% (93.8%) | t(39) = 3.8, P < 0.001 |
5. Different body parts have different genes. | 47.5% (64.6%) | 58.2% (60.8%) | t(39) = 2.5, P < 0.05 |
6. A gene is a disease. | 60.8% (97.6%) | 67.5% (94.4%) | t(39) = 2.2, P < 0.05 |
7. Most diseases are completely caused by things in the environment. | 59.3% (74.7%) | 65.9% (75.0%) | t(39) = 1.6, ns |
8. A person’s DNA can be used to specifically identify them. | 80.8% (98.8%) | 82.3% (95.0%) | t(39) = 0.5, ns |
Average accuracy | 60.0% (88.3%) | 68.9% (86.9%) | t(39) = 3.6, P < 0.001 |
ns, not significant.
Average researcher prediction of percentage of adults who will answer item correctly.
Percentage of public adult participants who correctly answered the item.