Habit strength as a function of drive in a brightness discrimination problem.

1956 ◽  
Vol 52 (1) ◽  
pp. 58-64 ◽  
Author(s):  
Eugene Eisman ◽  
Adele Asimow ◽  
Irving Maltzman
Keyword(s):  
Discrimination Problem ◽  
Brightness Discrimination ◽  
Habit Strength

The PREVIEW Study

2019 ◽  
Vol 26 (1) ◽  
pp. 10-20
Author(s):  
Maija Huttunen-Lenz ◽  
Sylvia Hansen ◽  
Thomas Meinert Larsen ◽  
Pia Christensen ◽  
Mathijs Drummen ◽  
...  
Keyword(s):  
Weight Loss ◽  
Weight Maintenance ◽  
Maintenance Phase ◽  
Habit Strength ◽  
Health Habits ◽  
Cross Sectional ◽  
Socio Economic Variables ◽  
Overweight Adults ◽  
Modification Intervention

Abstract. Individuals at risk of Type 2 Diabetes are advised to change health habits. This study investigated how the PREMIT behavior modification intervention and its association with socio-economic variables influenced weight maintenance and habit strength in the PREVIEW study. Overweight adults with pre-diabetes were enrolled ( n = 2,224) in a multi-center RCT including a 2-month weight-loss phase and a 34-month weight-maintenance phase for those who lost ≥ 8% body weight. Initial stages of the PREMIT covered the end of weight-loss and the beginning of weight-maintenance phase (18 weeks). Cross-sectional and longitudinal data were explored. Frequent PREMIT sessions attendance, being female, and lower habit strength for poor diet were associated with lower weight re-gain. Being older and not in employment were associated with lower habit strength for physical inactivity. The PREMIT appeared to support weight loss maintenance. Younger participants, males, and those in employment appeared to struggle more with inactivity habit change and weight maintenance.

The effect of intrahippocampally applied anisomycin on the retention of brightness discrimination in rats

1980 ◽  
Vol 29 (3) ◽  
pp. 281-288 ◽  
Author(s):  
Gisela Grecksch ◽  
Tilmann Ott ◽  
Hansjürgen Matthies
Keyword(s):  
Brightness Discrimination

Energy spectra for underground explosions and earthquakes

1963 ◽  
Vol 53 (5) ◽  
pp. 997-1005
Author(s):  
G. E. Frantti
Keyword(s):  
Energy Density ◽  
Frequency Dependence ◽  
Discrimination Problem ◽  
Seismic Source ◽  
Energy Spectra ◽  
Time Duration ◽  
Source Discrimination ◽  
Earthquake Energy

Abstract Energy density for the entire seismogram is examined as a function of frequency for underground explosions and earthquakes. Anomalous differences in the spectra appear to correlate with the time duration of the source. Ratios of aftershock to earthquake energy show a relatively flat frequency dependence. In contrast, corresponding ratios for nuclear shot-collapse events change rapidly with increasing frequency. Analysis of these data suggests that measurements of total seismogram energy might be usefully applied in the seismic source discrimination problem.

Effect of Reinforcement of the Negative Discriminandum in Differential Conditioning

1964 ◽  
Vol 14 (1) ◽  
pp. 107-110 ◽  
Author(s):  
Peter J. Donovick ◽  
Leonard E. Ross
Keyword(s):  
Phase I ◽  
Discrimination Learning ◽  
Differential Conditioning ◽  
Discrimination Problem ◽  
Single Stimulus ◽  
Female Rats ◽  
Second Phase ◽  
Learning Situation ◽  
Learning Conditions ◽  
The Difference

The present investigation was concerned with the reduction of inhibition associated with the negative discriminandum in a single stimulus discrimination learning situation. In Phase I 33 female rats were trained on a black-white discrimination problem. In the second phase Ss were divided into three groups which received: (a) 100% reinforcement to both the old positive and negative discriminanda; (b) four trials per day to the old negative, 100% reward; (c) eight trials per day to the old negative, 100% reward. As in previous studies, which employed simultaneous discrimination learning conditions, speed to the old negative remained significantly below speed to the old positive in the second phase. However, unlike the previous results, the difference decreased over trials. No differences were found between the groups that had trials to the old negative cue only, or between these groups and either speed to the old positive or the old negative in the case of the group receiving reward on both cues.

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