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<p>[QUOTE=&quot;all_fakes, post: 32253, member: 55&quot;]It does seem that the Gerbrands Co. made a wide variety of devices for use in behavioral research; I&#039;ve found online references to devices for feeding/training/rewarding pigeons, rats, and other animals</p><p><a href="http://aubreydaniels.com/institute/taxonomy/term/141" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://aubreydaniels.com/institute/taxonomy/term/141" rel="nofollow">http://aubreydaniels.com/institute/taxonomy/term/141</a></p><p>as well as the cumulative recorders mentioned.</p><p>And rat levers.....</p><p><br /></p><p>and an article on the history of cumulative recorders, which as mentioned this doesn&#039;t quite seem to be....</p><p><a href="http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3449858/" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3449858/" rel="nofollow">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3449858/</a></p><p><br /></p><p>Or tachistoscopes...</p><p><a href="http://www.worthpoint.com/worthopedia/tachistiscope-ralph-gerbrands-co-98765277" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.worthpoint.com/worthopedia/tachistiscope-ralph-gerbrands-co-98765277" rel="nofollow">http://www.worthpoint.com/worthopedia/tachistiscope-ralph-gerbrands-co-98765277</a></p><p><br /></p><p>But I haven&#039;t found reference to model m1a.....[/QUOTE]</p><p><br /></p>

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