{"title":"Complex relationship between response rate and preference in pigeons: Williams (1992) revisited.","authors":"Thomas R Zentall, Daniel N Peng, Laiba Rasul","doi":"10.3758/s13420-024-00660-1","DOIUrl":"https://doi.org/10.3758/s13420-024-00660-1","url":null,"abstract":"<p><p>A decrease in the rate of reinforcement associated with one component of a multiple schedule is typically associated with a decrease in responding in that component as well as with an increase in responding in the unchanged component. This increase in responding, referred to as positive contrast, is thought to result from an increase in the subjective value associated with the unchanged component. Williams Animal Learning & Behavior, 19, 337-344, (1991) challenged this hypothesis in an experiment with pigeons in which Stimulus A, associated with a variable interval schedule, was always followed by Stimulus X, associated with extinction, while Stimulus B, associated with the same variable interval schedule, was always followed by Stimulus Y, also associated with a variable interval schedule. Although Williams found that most of the pigeons pecked more at Stimulus A than at Stimulus B (behavioral contrast), when the pigeons were given a choice between Stimulus A and B, they showed a preference for Stimulus B. In the present experiment (a slight modification from Williams's), we confirmed this finding. Although our pigeons pecked more at Stimulus A than at Stimulus B, they generally preferred Stimulus B, the stimulus that was not followed by extinction. This result suggests that positive contrast may not result from an increase in the subjective value of the unchanged component. Instead, it suggests that this version of positive contrast may result at least in part from the pigeons' attempt to get all of the reinforcers possible in the presence of Stimulus A before the extinction schedule begins.</p>","PeriodicalId":49914,"journal":{"name":"Learning & Behavior","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142872953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Learning & BehaviorPub Date : 2024-12-01Epub Date: 2023-11-14DOI: 10.3758/s13420-023-00611-2
Alexandra K Schnell
{"title":"Octopus toss-up: Is debris throwing driven by intent?","authors":"Alexandra K Schnell","doi":"10.3758/s13420-023-00611-2","DOIUrl":"10.3758/s13420-023-00611-2","url":null,"abstract":"<p><p>In a noteworthy observation, Godfrey-Smith and colleagues report the first evidence of debris throwing in wild octopuses, including instances where they target conspecifics. Proposing parallels with behaviours observed in select social mammals, this discovery prompts inquiries into the extent of their similarity and the potential role of cognition.</p>","PeriodicalId":49914,"journal":{"name":"Learning & Behavior","volume":" ","pages":"285-286"},"PeriodicalIF":1.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92157123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Learning & BehaviorPub Date : 2024-12-01Epub Date: 2024-07-24DOI: 10.3758/s13420-024-00633-4
Chiaki Tanaka, Tohru Taniuchi
{"title":"Rats show up to 72 h of significant retention for spatial memory in the radial maze.","authors":"Chiaki Tanaka, Tohru Taniuchi","doi":"10.3758/s13420-024-00633-4","DOIUrl":"10.3758/s13420-024-00633-4","url":null,"abstract":"<p><p>This study explored long-term retention of spatial memory in rats using an eight-arm radial maze. Crystal and Babb (Learning and motivation, 39(4), 278-284, 2008) previously demonstrated that rats could retain spatial memory for up to 25 h in the radial maze. Notably, they found performance improved with 48-h intertrial intervals compared with 24-h intervals. Our study investigated the effects of extending intertrial intervals on long-term retention of spatial memory by reducing the potential for proactive interference. Each trial comprised a learning phase, during which subjects were required to sequentially visit four randomly selected arms, followed by a free-choice test that included all eight arms, conducted after increasing the retention and intertrial intervals. The retention intervals were systematically increased from 1 h to 24, 48, and, ultimately, 72 h, with corresponding intertrial intervals expanding from 24 to 48, 120, and 144 h. Performance significantly surpassed chance levels across all conditions, demonstrating that rats are capable of retaining spatial memory for up to 72 h.</p>","PeriodicalId":49914,"journal":{"name":"Learning & Behavior","volume":" ","pages":"330-338"},"PeriodicalIF":1.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11628574/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141762114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Learning & BehaviorPub Date : 2024-12-01Epub Date: 2023-12-11DOI: 10.3758/s13420-023-00621-0
Jose Prados
{"title":"Disentangling the evolution of cognition: Learning in Cnidaria.","authors":"Jose Prados","doi":"10.3758/s13420-023-00621-0","DOIUrl":"10.3758/s13420-023-00621-0","url":null,"abstract":"<p><p>Bielecki et al. Current Biology, 33, 4150-4159, (2023) described new behavioral and physiological paradigms to study associative learning and its neural basis in the Cnidaria Tripedalia cystophora. We discuss the relevance of these findings to further our understanding of the intertwined evolution of cognition and the nervous systems.</p>","PeriodicalId":49914,"journal":{"name":"Learning & Behavior","volume":" ","pages":"289-290"},"PeriodicalIF":1.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138807305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Learning & BehaviorPub Date : 2024-12-01Epub Date: 2024-03-19DOI: 10.3758/s13420-024-00628-1
Thomas R Zentall, Daniel N Peng
{"title":"Serial pattern learning: The anticipation of worsening conditions by pigeons.","authors":"Thomas R Zentall, Daniel N Peng","doi":"10.3758/s13420-024-00628-1","DOIUrl":"10.3758/s13420-024-00628-1","url":null,"abstract":"<p><p>In general, animals are known to be sensitive to the immediacy of reinforcers. That is, they are generally impulsive and outcomes that occur in the future are generally heavily discounted. Furthermore, they should prefer alternatives that provide reinforcers that require less rather than greater effort to obtain. In the present research, pigeons were given a choice between (1) obtaining reinforcers on a progressively more difficult schedule of reinforcement; starting with four pecks, then eight pecks, then 16 pecks, then 32 pecks, and finally 64 pecks on each trial, and (2) a color signaling a number of pecks for a single reinforcer: red = six, green = 11, blue = 23, or yellow = 45. If pigeons choose optimally, most of the time they should choose the progressive schedule to obtain five reinforcers rather than switch to a color to receive only one. However, if they are sensitive primarily to the number of pecks to the next reinforcer, they should choose the progressive schedule once before switching to red, twice before switching to green, three times before switching to blue, and four times before switching to yellow. Instead, they systematically switched too early. Rather than choose based on the rate of reinforcement or even based on the time or effort to the next reinforcer, they appear to anticipate that the progressive schedule is going to get more difficult, and they base their choice suboptimally on the serial pattern of the worsening progressive schedule.</p>","PeriodicalId":49914,"journal":{"name":"Learning & Behavior","volume":" ","pages":"296-301"},"PeriodicalIF":1.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140177413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Learning & BehaviorPub Date : 2024-12-01Epub Date: 2024-08-06DOI: 10.3758/s13420-024-00636-1
Miguel A Maldonado, José Andrés Lorca-Marín, María Sheila Velo-Ramírez, Francisco J Alós
{"title":"Differential effect of training impure tacts versus pure tacts plus intraverbal on the emergence of new verbal operants: A conceptual and methodological study.","authors":"Miguel A Maldonado, José Andrés Lorca-Marín, María Sheila Velo-Ramírez, Francisco J Alós","doi":"10.3758/s13420-024-00636-1","DOIUrl":"10.3758/s13420-024-00636-1","url":null,"abstract":"<p><p>The aim of this research was to test the effect of training impure tact versus pure tact and intraverbals on the emergence of new verbal operants (impure tacts), thus establishing a conceptual and methodological differentiation on these operants. This was done by varying the training order of intraverbal or impure tact to analyze and confirm whether or not impure tact is the mere sum of pure tact plus intraverbal and therefore has different functions and consequences in learning. An experiment was conducted with 30 participants randomly assigned to three groups. In Group 1, pure tact plus intraverbal and then impure tact were trained. In Group 3 the training order of these operants was counterbalanced. Group 2 was the control group, training only pure tact plus intraverbal. After the training phases, the emergence of impure tacts was tested. The results of this research indicate that the training of impure tacts favors the emergence of new impure tacts to a greater extent than the training of pure tact plus intraverbal and that they therefore have different functions. It is also shown that variation in the order of presentation of the type of training influences the subsequent emergence of new operants (impure tacts), so that creating a previous history of learning in impure tacts favors emergence even when the intraverbal alone is subsequently trained. This has important implications at both conceptual and methodological levels as it would contribute to the development of more effective language training technologies.</p>","PeriodicalId":49914,"journal":{"name":"Learning & Behavior","volume":" ","pages":"339-351"},"PeriodicalIF":1.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11628571/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141894741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Learning & BehaviorPub Date : 2024-12-01Epub Date: 2023-11-29DOI: 10.3758/s13420-023-00616-x
Vladimir V Pravosudov
{"title":"Multiple cache recovery task cannot determine memory mechanisms.","authors":"Vladimir V Pravosudov","doi":"10.3758/s13420-023-00616-x","DOIUrl":"10.3758/s13420-023-00616-x","url":null,"abstract":"<p><p>A recent paper Smulders et al., (2023) analyzed results of an experiment in which food-caching coal tits needed to relocate and recover multiple previously made food caches and argued that food caching parids use familiarity and not recollection memory when recovering food caches. The memory task involving recovery of multiple caches in the same trial, however, cannot discriminate between these two memory mechanisms because small birds do not need to recover multiple caches to eat during a single trial. They satiate quickly after eating just the first recovered food cache and quickly lose motivation to search for caches, and can be expected to start exploring noncache locations rather than recovering the remaining caches, which would result in inaccurate memory measurements.</p>","PeriodicalId":49914,"journal":{"name":"Learning & Behavior","volume":" ","pages":"291-292"},"PeriodicalIF":1.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138463902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Learning & BehaviorPub Date : 2024-12-01Epub Date: 2024-05-23DOI: 10.3758/s13420-024-00631-6
Dániel Rivas-Blanco, Tiago Monteiro, Zsófia Virányi, Friederike Range
{"title":"Going back to \"basics\": Harlow's learning set task with wolves and dogs.","authors":"Dániel Rivas-Blanco, Tiago Monteiro, Zsófia Virányi, Friederike Range","doi":"10.3758/s13420-024-00631-6","DOIUrl":"10.3758/s13420-024-00631-6","url":null,"abstract":"<p><p>To survive and reproduce, animals need to behave adaptively by adjusting their behavior to their environment, with learning facilitating some of these processes. Dogs have become a go-to model species in comparative cognition studies, making our understanding of their learning skills paramount at multiple levels, not only with regards to basic research on their cognitive skills and the effects of domestication, but also with applied purposes such as training. In order to tackle these issues, we tested similarly raised wolves and dogs in a serial learning task inspired by Harlow's \"learning set.\" In Phase 1, different pairs of objects were presented to the animals, one of which was baited while the other was not. Both species' performance gradually improved with each new set of objects, showing that they \"learnt to learn,\" but no differences were found between the species in their learning speed. In Phase 2, once subjects had learned the association between one of the objects and the food reward, the contingencies were reversed and the previously unrewarded object of the same pair was now rewarded. Dogs' performance in this task seemed to be better than wolves', albeit only when considering just the first session of each reversal, suggesting that the dogs might be more flexible than wolves. Further research (possibly with the aid of refined methods such as computer-based tasks) would help ascertain whether these differences between wolves and dogs are persistent across different learning tasks.</p>","PeriodicalId":49914,"journal":{"name":"Learning & Behavior","volume":" ","pages":"315-329"},"PeriodicalIF":1.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11628440/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141081440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effects of methamphetamine on delay discounting in rats using concurrent chains.","authors":"Rebecca Rose Hazel Bodeker, Randolph C Grace","doi":"10.3758/s13420-024-00657-w","DOIUrl":"https://doi.org/10.3758/s13420-024-00657-w","url":null,"abstract":"<p><p>Research has examined how stimulants affect impulsive choice in delay-discounting tasks, but little is known about whether such drugs influence how discounting varies with reward magnitude. This study sought to investigate the effects of acute and chronic methamphetamine administration on rats' responding in a rapid acquisition choice task in which reward delays were changed unpredictably across sessions. In each group of four sessions, delays were unequal (1 s/8 s, or 8 s/1 s) or equal (1 s/1 s, or 8 s/8 s) while reward magnitudes were constant and unequal (one dipper cycle/four dipper cycles). This enabled us to obtain both estimates of delay discounting (i.e., sensitivity to delay) and the magnitude effect (in which larger rewards are discounted at a lower rate). Methamphetamine was administered in increasing doses acutely and chronically. Baseline results showed that rats reliably preferred the alternative with a shorter delay and that choice for the larger reward was greater when the delays were long, consistent with the magnitude effect. Acute methamphetamine dose dependently reduced both sensitivity to delay and the magnitude effect, but not sensitivity to magnitude. Chronic administration had no systematic effect on choice. This study is the first to report a magnitude effect with rats in a rapid acquisition choice procedure similar to that found in delay discounting research with humans, and suggests that acute methamphetamine administration reduces control by contingencies that change across sessions.</p>","PeriodicalId":49914,"journal":{"name":"Learning & Behavior","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142739666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Amalia P M Bastos, Elizabeth Warren, Christopher Krupenye
{"title":"What evidence can validate a dog training method?","authors":"Amalia P M Bastos, Elizabeth Warren, Christopher Krupenye","doi":"10.3758/s13420-024-00658-9","DOIUrl":"https://doi.org/10.3758/s13420-024-00658-9","url":null,"abstract":"<p><p>In a recent study, Johnson and Wynne found that dogs classically conditioned to associate electric shocks with chasing a fast-moving mechanical lure inhibited chasing behaviour at test, while dogs conditioned with food rewards did not learn any operant behaviours to substitute chasing and therefore continued to interact with the lure. Here, we raise questions about the suitability of the training protocols and challenge the conclusion that shock collars impose minimal welfare impacts.</p>","PeriodicalId":49914,"journal":{"name":"Learning & Behavior","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142682876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}