Twelve dogs from three different breeds (basenji, Shetlandsheepdog, beagle) were either indulged or disciplined between thethird and eight weeks of their lives. The indulged animals wereencouraged in play, aggression, and climbing on their caretaker. Incontrast, the disciplined dogs were retrained to their handler’slap, taught to sit, stay, come, and so on. The indulged-disciplinedtreatment was inspired by reports that overindulged children cannotoften inhibit their impulses in structured situations. Each dog wastaken into a room with a bowl of meat. The dog was hungry but thehandler prevented it from eating for 3 minutes by hitting on therump with a newspaper and shouting ‘no’. The handler left the roomand the length of time it took the dog to begin eating the meat wasrecorded. Presumably, the indulged dog should go to the food morequickly than the disciplined dogs.
Basenjis | Shetlands | Beagles | |
Indulged | 1 | 7 | 9 |
| 4 | 10 | 7 |
| 3 | 10 | 10 |
| 1 | 9 | 10 |
| 2 | 6 | 8 |
| 2 | 8 | 9 |
Disciplined | 5 | 9 | 2 |
| 1 | 9 | 6 |
| 4 | 8 | 3 |
| 1 | 10 | 4 |
| 2 | 5 | 5 |
| 3 | 8 | 3 |
a. State the hypotheses for each of the three separate testsincluded in the two-factor ANOVA.
b. Use SPSS or manual calculation to test the significance ofmain and the interaction effects.
c. Present the effect size for each of the three tests