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Author Cynx, J.; Hulse, S.H.; Polyzois, S. openurl 
  Title A psychophysical measure of pitch discrimination loss resulting from a frequency range constraint in European starlings (Sturnus vulgaris) Type Journal Article
  Year 1986 Publication Journal of Experimental Psychology. Animal Behavior Processes Abbreviated Journal J Exp Psychol Anim Behav Process  
  Volume 12 Issue 4 Pages (down) 394-402  
  Keywords Animals; *Birds; Cognition; Female; *Generalization, Stimulus; Male; *Pitch Discrimination; Psychoacoustics; Transfer (Psychology)  
  Abstract Earlier research (Hulse & Cynx, 1985) revealed that a number of species of songbirds acquired a pitch discrimination between rising and falling sequences in an arbitrarily defined training range of frequencies, but then failed to generalize the discrimination to new frequency ranges--a frequency range constraint. The two experiments here provide a psychophysical estimate of how pitch discrimination deteriorated in one species as sequences were stepped out from the training range. The gradient showing loss of discrimination was much sharper than would have been anticipated by stimulus generalization or the training procedures, and appeared unaffected by the removal of rising and falling frequency information. The frequency range constraint and its psychophysical properties have implications both for the analysis of birdsong and the study of animal cognition.  
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  ISSN 0097-7403 ISBN Medium  
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  Notes PMID:3772303 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2786  
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Author Zentall, S.S.; Zentall, T.R. openurl 
  Title Hyperactivity ratings: statistical regression provides an insufficient explanation of practice effects Type Journal Article
  Year 1986 Publication Journal of pediatric psychology Abbreviated Journal J Pediatr Psychol  
  Volume 11 Issue 3 Pages (down) 393-396  
  Keywords Attention Deficit Disorder with Hyperactivity/*diagnosis; Child; Humans; Male; *Practice (Psychology); *Statistics  
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  ISSN 0146-8693 ISBN Medium  
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  Notes PMID:3772683 Approved no  
  Call Number refbase @ user @ Serial 261  
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Author Lima, S.L. doi  openurl
  Title Predation Risk and Unpredictable Feeding Conditions: Determinants of Body Mass in Birds Type Journal Article
  Year 1986 Publication Ecology Abbreviated Journal Ecology  
  Volume 67 Issue 2 Pages (down) 377-385  
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  Notes doi: 10.2307/1938580 Approved no  
  Call Number Equine Behaviour @ team @ Serial 5141  
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Author Cox Je, openurl 
  Title Behaviour of the false rig: Causes and treatments Type Journal Article
  Year 1986 Publication Abbreviated Journal Vet Record  
  Volume 118 Issue Pages (down) 353-356  
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  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 995  
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Author Zumpe, D.; Michael, R.P. doi  openurl
  Title Dominance index: A simple measure of relative dominance status in primates Type Journal Article
  Year 1986 Publication American journal of primatology Abbreviated Journal Am. J. Primatol.  
  Volume 10 Issue 4 Pages (down) 291-300  
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  Abstract A simple measure of relative dominance status (cardinal rank) is described which we have termed the dominance index. Like more familiar techniques for assessing rank order, it is based on the direction of aggressive and submissive behaviors between all possible paired combinations of animals in a social group. Using data from five groups of female rhesus monkeys, it reliably produced the same ordinal ranks as fight interaction matrices. There was also good agreement with the cardinal ranks produced by two additional measures of dominance and with those produced by observer ratings. The dominance index can be calculated when fights have not actually occurred and is largely independent of the frequency of agonistic interactions. It has, therefore, wide application and can estimate dominance during brief sampling periods (one hour) and also in stable groups when agonistic interactions are low. Its application is described in experiments in which the male in a group of females was changed and the hormonal status of the females was altered. Estrogen increased female dominance status relative to other females.  
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  ISSN 1098-2345 ISBN Medium  
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  Notes Approved no  
  Call Number refbase @ user @ DorisZumpe1986 Serial 871  
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Author Rubenstein, D. I., openurl 
  Title Ecology and sociality in horses and zebras Type Book Chapter
  Year 1986 Publication Ecological Aspects of Social Evolution Abbreviated Journal Ecological Aspects of Social Evolution  
  Volume Issue Pages (down) 282-302  
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  Publisher Princeton University Press Place of Publication Princeton, NJ. Editor Rubenstein, D. I. ; Wrangham, R. W.  
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  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 1526  
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Author Turner Jw, K.J. openurl 
  Title Fertility control as a management tool for feral horse populations Type Journal Article
  Year 1986 Publication Abbreviated Journal J Equine Vet Sc  
  Volume 6 Issue Pages (down) 278-284  
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  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 1669  
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Author White Dj, openurl 
  Title The american humane association: Position on wild horse management Type Journal Article
  Year 1986 Publication Abbreviated Journal J Equine Vet Sc  
  Volume 6 Issue Pages (down) 276-277  
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  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 1706  
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Author Mclain Jl, openurl 
  Title The wild horse controversy Type Journal Article
  Year 1986 Publication Abbreviated Journal J Equine Vet Sc  
  Volume 6 Issue Pages (down) 274-275  
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  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 1382  
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Author Godfrey Eb, L.P. openurl 
  Title Wild horsres mangement: An economic perspective Type Journal Article
  Year 1986 Publication Abbreviated Journal J Equine Vet Sc  
  Volume 6 Issue Pages (down) 266-273  
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  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 1117  
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