TY  - RPRT
TI  - Anxiety and learning to formulate hypotheses.
AU  - S P Klein
AU  - N Frederiksen
AU  - F R Evans
PY  - 1969
DO  - 10.1037/h0028351
UR  - https://pubmed.ncbi.nlm.nih.gov/5361247/
ID  - 5361247
ER  -