Results of the open field test for the housing density experiment. Timothy Hugh Barker Rebecca Peta George Gordon Stanley Howarth Alexandra Louise Whittaker 10.1371/journal.pone.0185135.g012 https://plos.figshare.com/articles/figure/Results_of_the_open_field_test_for_the_housing_density_experiment_/5421400 <p>A) The interaction of housing density and social class on the percentage of time spent in the peripheral zone of the OFT. B) The interaction of housing density and social class on the percentage of time spent in the centre zone of the OFT. C) The interaction of housing density and social class on the percentage of time spent rearing in the OFT. Significance is denoted at p<0.05.</p> 2017-09-19 17:45:34 surface area cage floor space requirements space allocation experiment Dominant animals laboratory rats rank Male Sprague Dawley space allocation treatments judgment bias paradigm SD welfare Minimum space allowances housing density