In the study by Bandura et al. (aggression), inter-rater reliability was measured.

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2021). The mark or mark type is shown in brackets.

1. 1 mark for outlining
2. The extent to which two raters/researchers (coding the same data) produce the same records;
3. When multiple raters are consistent (with each other);
4. 1 mark for description (of procedure that increased inter-rater reliability)
5. 1 mark for detail
6. 1 mark for link
7. Using scales that were objective; (description) four 5-point rating scales; (description) used in initial assessment of aggression; (detail/link) by experimenter and nursery school teachers (detail/link)
8. the observation scales were piloted; and the scoring system amended; (description + detail)
9. During the pretest...subjects imitated...components of the model's behavior but not the complete act, or they directed the imitative aggressive response to some object other than...Bobo... scored...as partially imitative behavior; (link)
10. The behaviour categories were clearly/operationally defined; (description)
11. Mallet aggression: strikes objects other than Bobo aggressively with mallet;
12. Sits on Bobo: lays Bobo on its side and sits on it but does not aggress toward it; Punches Bobo: strikes, slaps, or pushes doll aggressively;
13. Nonimitative physical and verbal aggression: physically aggressive acts directed toward objects other than Bobo; hostile remarks except for those in the verbal imitation category e.g. "Shoot the Bobo," "Cut him," "Stupid ball," "Knock over people," "Horses fighting, biting"; Aggressive gun play: shoots dart or aims the guns and fires imaginary shots at objects in the room; (detail + link)