![](/img/cover-not-exists.png)
Effects of different sources of positive and negative information on observational learning of a teaching skill.
Koran, John J., Koran, Mary L., McDonald, Frederick J.Volume:
63
Year:
1972
Language:
english
Journal:
Journal of Educational Psychology
DOI:
10.1037/h0033242
File:
PDF, 505 KB
english, 1972