| A | B |
| Heritability | The variation within a group caused by genetic factors |
| Environment | Can be early intervention, schooling and family life |
| identical twins | monozygotic twins |
| fraternal twins | dizygotic twins |
| adoption studies | These studies showed child scores became modestly more like their biological parents' scores. |
| nature vs. nurture | The main debate in IQ is |
| Stereotype Threat | Poor performance because of fear that they may confirm the stereotype leading to self-doubt and anxiety |
| Burakumin | People of Japan are severely discriminated against but score well when outside that discrimination |
| Culturally Biased | Test will favor the people from the culture in which it was developed. |