Vancleef, K., Read, J. C., Herbert, W., Goodship, N., Woodhouse, M., & Serrano-Pedraza, I. (2018). Two choices good, four choices better: For measuring stereoacuity in children, a four-alternative forced-choice paradigm is more efficient than two. PLoS ONE, 13(7), Article e0201366. https://doi.org/10.1371/journal.pone.0201366