. The effect of age on habit formation in the albino rat ... Animal behavior; Rats. UNIT = 1 10 20 30 40 oO 60 70 30 dO 100 110 120 HUMBBR OP TRIALS. UNIT =» 10 11575 200 SOO 400 500—600 700 TOTAL TIME (SECONDS) 800 900 IQOO 1100 1^0 35 0 i 4 UNIT = 100. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hubbert, Helen Brewster, 1887-. Baltimore, Md.

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanimalbehavior, booky