TY  - GEN
AU  - Lind,Johan
AU  - Ghirlanda,Stefano
AU  - Enquist,Magnus
TI  - Insight learning or shaping?
SN  - 1091-6490
PY  - 2009///0909
KW  - Animals
KW  - Crows
KW  - physiology
KW  - Intelligence
KW  - Learning
KW  - Problem Solving
KW  - Reinforcement, Psychology
KW  - Tool Use Behavior
N1  - Publication Type: Letter; Comment
UR  - https://doi.org/10.1073/pnas.0906120106
ER  -