Table 2 Tasks used in the various studies.
From: Self-control has a social role in primates, but not in other mammals or birds
Study | Task | Description |
|---|---|---|
Stevens59 | indifference | time delay at which animals is no longer willing to delay for a larger reward |
MacLean et al.58 | A-not-B | select new position when rewarded cup is moved after baiting in a 3-cup task |
| Â | cylinder | select ends of transparent cylinder not middle of tube to access reward |
Amici et al.75 | A-not-B | as above |
| Â | middle cup | spatial displacement: ignore middle cup when reward is moved in a 3-cup task |
| Â | plexiglass hole | reach through side hole rather than through plexiglass screen when reward is moved from in front of one of 2 holes to a position in between |
| Â | swing door | select opposite of 2 swing doors in plexiglass screen to avoid other door knocking reward behind it off shelf |
|  | indifference | as above [labelled ‘delayed gratification’ in75 |
Amici et al.76 | social task [ExpSR] | select smaller reward to avoid larger reward going to rival |
