5 ms·
Summary: one shouldn't assume uniform prior distributions in psychological experiments. Bayes-rule is your friend.
by lkozma 19y ago
Summary: one shouldn't assume uniform prior distributions in psychological experiments. Bayes-rule is your friend.
- jgrahamc 19y agoTo quote the article: "He says the psychologists wrongly assumed that the monkey began by valuing all three colors equally." So, basically psychologists are dumb; why assume that monkeys have no color preference? Even if you don't think they've got any intelligence, you could probably assume that they have some knowledge of colors associated with looking for food.
- philh 19y agoBut also from the article: "After identifying three colors preferred about equally by a monkey -" They didn't assume there were no preferences. Their mistake was to assume they could measure them precisely enough.
- gojomo 19y agoThis monkey thinks that perceived novelty/rarity could also explain the green-preference. When at the second forced-choice, blue has appeared in 2-of-4 positions, while both red and green have only appeared in 1-of-4 positions each. Further, blue has always been at least one choice. That makes it look common, so less interesting.