La pratique des groupes en éducation

in Orientation Scolaire et Professionnelle (L') [=OSP] (1974), 3

Evaluation continue et examens : précis de docimologie.

Book published by Labor - 3e édition revue et corrigée (1974)

La crise mondiale de l'éducation

in Toison d'Or (La) (1974), 6

Comparative study of the effects of ethidium bromide and DNA-ethidium bromide complex on normal and cancer cells.

in Biochemical Pharmacology (1974), 23(10), 1549-51

Comment les maîtres enseignent : analyse des interactions verbales en classe

Book published by Ministère de l’Education nationale et de la Culture française. Direction générale de l’Organisation des études - 3ème édition (1974)

Studies on ghosting, an important source of error in the quantitative estimation of free volatile fatty acids by GLC. 2. Effect of sample VFA concentration on ghosting magnitude and effectiveness of remedies to limit ghosting

in Journal of Chromatographic Science (1974), 12

Action of a new psychotropic drug (sulpiride) on avoidance behavior in rats

in Psychopharmacologia (1974), 39

Sulpiride, a new psychotropic drug with neuroleptic activity, was administered to rats in a sidman avoidance schedule. Doses ranging from 1 to 80mg/kg resulted on the animal recieving fever shocks. This ... [more ▼]

Sulpiride, a new psychotropic drug with neuroleptic activity, was administered to rats in a sidman avoidance schedule. Doses ranging from 1 to 80mg/kg resulted on the animal recieving fever shocks. This effect was not correlated with an increase of responding and seemed unrelated to the suppressing action abruptly observed at high doses (i.e. 150 to 200 mg/kg). These results differ from those classicaly obtained with other neuroleptics. [less ▲]

Analyse statistique de résultats d'essais à blanc

in Biométrie-Praximétrie (1974), 14(1-2), 57-79

Non-stationnarite et aspects fonctionnels du comportement agonistique chez Tilapia macrochir (Boulenger 1912) (Piscer: Cichlidae)

in Acta Zoologica et Pathologica Antverpiensia (1974), 58(0), 29-40

Control of key pecking by the duration of a visual stimulus

in Journal of the Experimental Analysis of Behavior (1974), 22(1), 131-134

Pigeons' key peck were brought under the control of the duration of a visual stimulus in one-key and two-key procedures. In the one-key procedure, pecks were reinforeced after presentations of a long ... [more ▼]

Pigeons' key peck were brought under the control of the duration of a visual stimulus in one-key and two-key procedures. In the one-key procedure, pecks were reinforeced after presentations of a long-duration stimulus but not after presentations of a short-duration stimulus. In the two-key procedure, left-key pecks were reinforced after the long-duration stimulus and right-key pecks after the short-duration stimulus. In both procedures, the long-duration stimulus was 10 sec, and the short-duration stimulus was increased from 1 to 8 sec in1-sec steps. Discriminative control developed with both procedures, but with greater acuracy in the two-key procedures, in which a difference threshold was obtained at short-duration values between 7 and 8 sec, or about 2.5 sec shorter than the long-duration stimulus. [less ▲]