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Louis Lefebvre Nikoleta Juretic Nektaria Nicolakakis Sarah Timmermans 《Animal cognition》2001,4(2):91-97
The short notes of ornithology journals feature new and unusual feeding behaviours, which, when systematically collated,
could provide a quantitative estimate of behavioural flexibility in different bird groups. Previous studies suggest that taxonomic
variation in the frequency of new behaviours (innovations) is correlated with variation in relative forebrain size. Recent
work on primates shows, however, that observer bias can affect innovation frequency. We assess this possibility in birds via
three estimates in North America and Australia: the number of full-length papers in academic journals, the frequency of photographs
in birding magazines and a questionnaire on reporting bias given to ornithologists at a meeting. We also look at sampling
effects due to single journal sources by doing a split-half analysis of our North American database (The Wilson Bulletin vs. six other journals) and adding three new Australian journals to the one we had used previously. In multiple regressions
that also included species number per taxon, none of the potential biases could account for the correlation between forebrain
size and innovation frequency. Species number was the best predictor of full-length paper frequency, which was the best predictor
of photograph numbers. Ornithologists are not preferentially interested in innovative, large-brained taxa, suggesting that
the correlation between innovations and neural substrate size is not a spurious effect of the biases examined here.
Accepted after revision: 27 July 2001
Electronic Publication 相似文献
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Barnwell SV Juretic MA Hoerster KD Van de Plasch R Felker BL 《Psychological services》2012,9(2):209-211
The VA Puget Sound Health Care System Telemental Health program connects veterans with psychologists, psychiatrists, and social workers via live clinical video teleconferencing. Providers deliver care to veterans in rural Veteran Affairs medical centers, community-based outpatient clinics and residences, and thus, increase access to specialty mental health care for rural and medically underserved veteran communities. 相似文献
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