Jacques P. Beaugrand

Jacques P. Beaugrand
Université du Québec à Montréal | UQAM · Department of Psychology

Doctorate Ph.D., L. Sc. Nat., M.Sc.

About

66
Publications
24,199
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
856
Citations
Citations since 2016
0 Research Items
150 Citations
20162017201820192020202120220510152025
20162017201820192020202120220510152025
20162017201820192020202120220510152025
20162017201820192020202120220510152025
Introduction
My interests are into epistemology of sciences (especially behavioral), the construction and testing of models and theories, simulation, research methods, statistics, direct and systematic observation, animal behavior, agonistic behavior, aggressive behavior, dominance and territoriality, evolutionary psychology and biology, neurobiology, and related topics. Using DNA to confirm degree of relatedness and gain knowledge on ancestry. http://bit.ly/NoW89i http://beaugrandjacques.ca
Additional affiliations
January 2012 - present
Université du Québec à Montréal
Description
  • I am now retired.
Education
September 1971 - October 1976
Université Catholique de Louvain - UCLouvain
Field of study
  • Psychologie comparée et éthologie
September 1965 - September 1970
Université de Montréal
Field of study
  • Psychology (Psychophysiology)

Publications

Publications (66)
Research
Full-text available
Utilisation de signatures ADN-mt et ADN-Y à des fins de validation de lignages dans une généalogie.
Research
Full-text available
How to proceed through triangulation to validate some lineages part of a genealogy.
Article
Full-text available
This research evaluates the effectiveness of bill trimming in Muscovy ducklings in preventing feather plucking and mortality during the period of fattening. Two samples of N=100 ducklings of the same age were randomly composed. In a first group, 4-day old ducklings had 3 mm of their maxilla trimmed, followed by cauterization. They formed the TRIM g...
Article
Full-text available
This study examines the role of observation during the formation of triads in female domestic hens. Results indicate that during hierarchy formation, a hen observing agonistic interactions and conflict settlement between its former dominant and a stranger uses this information when in turn confronted by the latter. Under a first condition (E, n = 1...
Article
Full-text available
The relative contribution of prior experience and of size asymmetries to the determination of dyadic dominance between unfamiliar individuals was examined using pairs of green swordtail fish, Xiphophorus helleri. Three experiments were conducted to assess the extent to which superiority in size could override potential handicaps resulting from prio...
Article
Full-text available
This simulation study explores some conditions leading to transitivity within dominance orders. Combinations of three parameters were varied to study their consequences upon hierarchy formation and upon the degree of linearity of resultant structures. The factors studied were: (1) the importance of initial resource holding potentials (RHPs); (2) ch...
Article
Full-text available
This research compares the role of initial individual characteristics to that of patterns of resolution in which successive dominance relationships are established during the formation of triads in the domestic hen. Combining weight and comb size with prior victory or defeat in the site of encounter, we created three levels of asymmetries of charac...
Article
Full-text available
Conflict resolution of acquainted opponents was compared to that of unacquainted ones in Xiphophorus helleri males. Under the Familiar condition, the 2 males which met had settled contest against each other in a previously staged encounter in another aquarium. Thus one opponent was previously the dominant pair member, the other its subordinate. Und...
Article
Full-text available
We examined the effect of prior victory or defeat in the same site as that of a subsequent encounter on the outcome of dyadic encounter of domestic hens by placing them in two situations: In the first set of dyads, two unacquainted hens having experienced prior victory were introduced in the site where one had experienced victory. In the second set...
Article
Full-text available
The stability of dominance relationships between pairs of male Green Swordtail fish was followed daily for 20 consecutive days. In one experimental sample composed of 21 pairs, dominance of one of the fish had been favoured on the first day by giving the fish prior familiarity (prior residency) with the aquarium where it was to meet an intruder. In...
Article
Full-text available
Triads of Xiphophorus helleri males composed of a large prior winner (A), a small prior winner (a), and a small prior loser (w) were formed. In one condition, A was used as bystander while in another condition it was the small w. The bystander could see through a transparent partition and observe conflict settlement between the two other fish witho...
Article
Full-text available
The relative contribution of asymmetries in prior experience, size, and prior residency to the determination of dyadic dominance between unacquainted individuals was examined using pairs of green swordtail fish, Xiphophorus helleri. Four types of encounters were staged between an intruder and a smaller resident: (1) both had experienced prior victo...
Article
Full-text available
The swordtail fish is a species particularly abundant in fresh water of Mexico and Central America. It is an ovoviviparous species, not really territorial which shows nip﷓right order. In this research, significant differences of spatial distribution have been found according to the position in the nip﷓right order and according to the sex of the fis...
Article
Full-text available
Salmonids, outside their reproductive period, are seen to have two types of territory called "territorial mosaic" and "partial territory". The first aspect of this research aimed at identifying the type of territory established by mature brook chars in artificial streams. After this, the biological value of spacing out was studied with regard to tw...
Article
Full-text available
This simulation study explores some conditions leading to transitivity within dominance orders. Combinations of three parameters were varied to study their consequences upon hierarchy formation and upon the degree of linearity of resultant structures. The factors studied were (i) the importance of initial Resource Holding Potentials (RHPs) , (ii) c...
Article
Full-text available
Males and females form distinct hierarchies which are perfectly linear and transitive in 68% and 42% of cases respectively. Alpha males are much more aggressive than their isosexual subordinates. In females, the frequency of aggressive behaviour appears to be more proportional to the social rank of the initiator, but number of chases received from...
Article
Full-text available
An experimental model was constructed using seven postulates derived from the experimental results of Zayan (1974, 1975a,b,c, 1976). The model specifies the relative importance of several asymmetries in predicting aggressive dominance in Xiphophorus helleri. These asymmetries concern difference between duellists with respect to: prior residence in...
Article
Full-text available
An attempt was made to show magnetic sensitivity in seven species of European birds captured during their migration. The test was done on the following species: Streptopelia turtur (N=8), Streptopelia decaocto (N=2), Corvus monedula (N=6); one individual of the following: Corvus corona c., Turdus philomelos, Turdus viscivorus, Anas penelope. Most o...
Article
Full-text available
Aggressive scores obtained in a mirror test 1h before an encounter were found to be a good predictor of victory in male Xiphophorus dyads showing less than 5% size differences. Out of 36 dyad members showing higher aggressive scores at pre-test, 28 obtained victory in the subsequent encounter. It was found that future winners were more aggressive t...
Article
Full-text available
In experiments, there are usually two general ways of obtaining dominants and subordinates to test for the effect of recent experience upon ulterior behavior and dominance. One is to ‘impose’ such an experience on the contestants by a priori deciding which individual of the pair will become the dominant and which will become the subordinate through...
Article
Full-text available
Recent victory or defeat experiences and 2-h familiarity with the meeting place were combined with size differences in order to better understand their effects on the behaviour leading to the establishment of dyadic dominance relationships between hens not previously acquainted with each other. Three kinds of encounters were videotaped: (i) A previ...
Article
Full-text available
This study simultaneously varied experiences of recent victory or defeat, 2-h familiarity with the meeting place, and hen weight in order to understand their combined effects on the establishment of dyadic dominance relationships between hens not previously acquainted with each other. Three kinds of encounters were arranged: (i) a previous winner u...
Article
Full-text available
We examine the role of observation during the formation of triads in females of the domestic fowl. During hierarchy formation, a hen observing agonistic interactions and conflict settlement between its former dominant and a stranger uses this information when in turn confronted by the latter. Under a first condition, bystanders witnessed their prio...
Article
Full-text available
Triads of Xiphophorus helleri males composed of a large prior winner (A), a small prior winner (α), and a small prior loser (ω) were formed. In one condition, A was used as bystander while in another condition it was the small ω. The bystander could see through a transparent partition and observe conflict settlement between the two other fish witho...
Article
Full-text available
Individuals with a previous experience of dominance are likely to be dominants in further encounters. To test this effect, individuals with a previous experience of dominance are used for the experiments. One way to obtain such individuals is to let opponents ‘self-select’: encounters between pairs of more or less equivalent opponents are staged an...
Article
Full-text available
The relative contribution of asymmetries in prior experience, size, and prior residency to the determination of dyadic dominance between unacquainted individuals was examined using pairs of green swordtail fish, Xiphophorus helleri. Four types of encounters were staged between an intruder and a smaller resident: (1) both had experienced prior vicct...
Article
Full-text available
Luc Prévost & Jacques P. Beaugrand Effects of hypothermia on maternal responsiveness in mice (Mus musculus) Résumé Cette recherche tente de déterminer si les soins maternels chez la souris peuvent protéger les souriceaux des effets létaux produits par une hypothermie induite par un refroidissement prolongé. Le comportement maternel a été observé a...
Chapter
Full-text available
An experimental model was constructed using seven postulates derived from the experimental results of Zayan (1974, 1975a,b,c, 1976). The model specifies the relative importance of several asymmetries in predicting aggressive dominance in Xiphophorus helleri. These asymmetries concern differences between opponents with respect to: prior residence in...
Conference Paper
Full-text available
A table driven parser for the recognition of behavioural patterns is presented. SYNTAX is able to perform basic syntactic analysis. As a general automaton, it can check if a given corpus of data conforms to specific behavioural grammar. To do this, the Pascal program reads a sequence of EBNF-productions followed by data, and transforms these produc...
Conference Paper
Full-text available
A computer program which reads tables and generates sequences of behaviour respecting the transitional probabilistic structure of the tables. The program described in this paper is written in Turbo Pascal 5.5 (Borland International) for the IBM XT/AT family of computers. Upon initiating execution, GENSEQ prompts the user at the screen for several p...
Conference Paper
Full-text available
This short note presents a computer program which performs standard sequential analysis on a PC. The program described in this paper is written in Turbo Pascal 5.5 (Borland International) for the IBM XT/AT family of computers and can be easily adapted for other personal computers. ANASEQ is designed to analyse event sequences. The flow of behaviour...
Article
Full-text available
An attempt was made to test the sensitivity of homing pigeons to weak magnetic variations of the order of the ones naturally occurring on earth. Pigeons were first subjected to a cardiac orienting reflex test to 50 magnetic stimuli and to 50 control stimuli presented alone and randomly interdigitated. They were then subjected to a differential noci...
Article
Full-text available
Rats with electrodes implanted in the posterior lateral hypothalamus or ventro medial tegmentum areas were trained to self stimulate. They then received either alpha methyl para tyrosine (α MPT), alpha methyl para tyrosine methyl ester (α MPT methyl ester) or vehicle injections. Four hr following injection, α MPT and α MPT methyl ester treated anim...
Article
Full-text available
Rats with electrodes implanted in the posterior lateral hypothalamus and ventromedial tegmentum were trained to self-stimulate. Animals were treated (i.p.) first with alpha-methyl-p-tyrosine (alpha-MPT) and then L-DOPA; their self-stimulation rates and spontaneous behaviour were recorded. alpha-MPT (100 mg/kg) had an immediate and long lasting supp...
Article
The hospital study of a fairly representative sample of cases of rheumatoid arthritis observed in 1973 shows that only 10% of the patients were troubled by severe handicap. 34 patients carried on with an active remunerative job. The polyarthrites with which they were afflicted were not particularly severe, nor particularly mild from the anatomical...
Article
Full-text available
Ambivalent behavior or ambivalence in rats was observed in a single-lever Skinner box situation. The behavioral features associated with ambivalence were filmed and described, and their intensities were graded. It was found that different behavioral patterns, depending on the site of stimulation, are involved in ambivalence. Moreover, the intensity...
Article
Factors which contribute to the fact that an individual maintains a relationship of quality with its environment, and thus is well adjusted to it, are the same factors which favor its social dominance. In a context in which resources are limited or can become scarce, dominance orders get established because it is to the interest of individuals to c...
Article
Full-text available
Révision du 2 février 2012 Note de Jacques Beaugrand : ce chapitre reprend essentiellement celui qui a été publié dans le collectif de Michèle Robert (3 e édition 1988) *Fondements et étapes de la Recherche scientifique en psychologie*. Saint-Hyacinthe : Edisem. Beaugrand.jacques@uqam.ca -0-0-0-L'objectif du présent chapitre est de familiariser le...
Article
Full-text available
This experiment consisted of 75 different pairs composed of two male adults Xiphophorus helleri meeting each other twice. On the first occasion, one of the fish was familiarized with the meeting place for 3h (resident) while its opponent was familiarized with another aquarium (intruder). Upon dominance of one individual over the other, the pair mem...
Article
Full-text available
Factors which contribute to the fact that an individual maintains a relationship of quality with its environment, and thus is well adjusted to it, are the same factors which favor its social dominance. In a context in which resources are limited or can become scarce, dominance orders get established because it is to the interest of individuals to c...

Network

Cited By

Projects

Projects (8)
Archived project
Devenir chercheur
Archived project
Obtenir mes diplômes