TY  - GEN
AU  - Schmeck,R R
AU  - Bruning,J L
TI  - Task difficulty and the frustration effect
SN  - 0022-1015
PY  - 1969///0306
KW  - Analysis of Variance
KW  - Animals
KW  - Drive
KW  - Frustration
KW  - Motivation
KW  - Motor Activity
KW  - Rats
KW  - Reinforcement Schedule
KW  - Reinforcement, Psychology
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.1037/h0026476
ER  -