@misc{indiciae169914617a4c, title = {Effects of state anxiety and task difficulty on computer-assisted learning.}, author = {H F O'Neil and C D Spielberger and D N Hansen}, year = {1969}, doi = {10.1037/h0028323}, url = {https://pubmed.ncbi.nlm.nih.gov/5364288/}, note = {Source identifier: 5364288} }