scholarly journals Effects of free food deliveries and temporal contiguity on choice under concurrent-chain schedules

2009 ◽  
Vol 16 (4) ◽  
pp. 736-741 ◽  
Author(s):  
Carwyn Scoones ◽  
Andrew Hucks ◽  
Anthony P. McLean ◽  
Randolph C. Grace
2007 ◽  
Vol 8 (2) ◽  
pp. 237-252
Author(s):  
Paul Neuman ◽  
Natalie Hansell ◽  
Elizabeth Kriso

2001 ◽  
Vol 53 (3) ◽  
pp. 171-180 ◽  
Author(s):  
James E. Mazur ◽  
Nancy Blake ◽  
Courtney McManus

2005 ◽  
Vol 70 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Koichi Ono ◽  
Naoki Yamagishi ◽  
Toru Aotsuka ◽  
Rieko Hojo ◽  
Yuki Nogawa

1973 ◽  
Vol 33 (1) ◽  
pp. 215-218
Author(s):  
Gerald D. Lachter

2 pigeons were exposed to a concurrent-chains procedure consisting of identical 60-sec. random-interval initial links and terminal links which resulted in reinforcement on either a 60-sec. random-interval schedule, or a 30-sec., 60-sec., or 120-sec. non-contingent reinforcement schedule. For both Ss, data indicated a preference for the non-contingent reinforcement schedule at both the 30- and 60-sec. values.


2021 ◽  
pp. 1-9
Author(s):  
Bandana Sen ◽  
Aloke Kar

The present study provides a snapshot of the level of degradation of economic and living conditions of middle-class households of Kolkata and its neighbourhood during ‘lockdown’. It is based on an on-line survey of households of students of five purposively-selected colleges carried out during the second half of May 2020. The survey reveals that inflow of regular normal income had ceased altogether for over 40% of the sample households. About 15% of the households suffered from outright job loss or complete denial or withholding of wages and salaries payments of their members in paid employment and another about 27% reported complete closure of small businesses run by them. The normal-times income had altogether ceased for over a half of the households of the lowest income group. Predictably, the worst hit group was the wage labourers. Over four-fifths households with their prime earning member in wage employment reported job and earnings related problems, with over a fourth reporting job losses. Households with self-employed prime earners too were severely affected, with about three-fourths of them reporting such problems. Even the households with regular-salaried prime earners were badly hit. About a half of them reported job and earnings related problems. The results suggest that food grains distribution through the Public Distribution System (PDS) played a decisive role in averting an imminent famine-like situation. About 60% of the sample households were found to have procured food stuff from the PDS. Among the wage-labourers’ households, well over 80% reported dependence on the PDS, with ostensibly a large proportion of them receiving food altogether free. Despite free food grains distribution, about 5% of the sample households could not arrange three meals a day for all its members.


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