keyword
MENU ▼
Read by QxMD icon Read
search

Discrete-trial

keyword
https://www.readbyqxmd.com/read/27853619/multi-alternative-decision-making-with-non-stationary-inputs
#1
Luana F Nunes, Kevin Gurney
One of the most widely implemented models for multi-alternative decision-making is the multihypothesis sequential probability ratio test (MSPRT). It is asymptotically optimal, straightforward to implement, and has found application in modelling biological decision-making. However, the MSPRT is limited in application to discrete ('trial-based'), non-time-varying scenarios. By contrast, real world situations will be continuous and entail stimulus non-stationarity. In these circumstances, decision-making mechanisms (like the MSPRT) which work by accumulating evidence, must be able to discard outdated evidence which becomes progressively irrelevant...
August 2016: Royal Society Open Science
https://www.readbyqxmd.com/read/27622126/chaining-functional-basketball-sequences-with-embedded-conditional-discriminations-in-an-adolescent-with-autism
#2
Joseph M Lambert, Bailey A Copeland, Erica L Karp, Crystal I Finley, Nealetta J Houchins-Juarez, Jennifer R Ledford
Individuals with developmental disabilities successfully participate in fewer recreation activities, including sports activities, than their typically developing peers. Although a functional basketball-playing repertoire might increase social opportunities and physical health for these individuals, no research has outlined a behavior-analytic strategy for teaching this sport. In our study, we taught a 13-year-old male diagnosed with autism to play basketball. During phase 1, we employed discrete-trial training to establish proficiency with nine fundamental basketball skills (i...
September 2016: Behavior Analysis in Practice
https://www.readbyqxmd.com/read/27601984/cognitive-judgment-bias-interacts-with-risk-based-decision-making-and-sensitivity-to-dopaminergic-challenge-in-male-rats
#3
Robert Drozd, Przemyslaw E Cieslak, Michal Rychlik, Jan Rodriguez Parkitna, Rafal Rygula
Although the cognitive theory has implicated judgment bias in various psychopathologies, its role in decision making under risk remains relatively unexplored. In the present study, we assessed the effects of cognitive judgment bias on risky choices in rats. First, we trained and tested the animals on the rat version of the probability-discounting (PD) task. During discrete trials, the rats chose between two levers; a press on the "small/certain" lever always resulted in the delivery of one reward pellet, whereas a press on the "large/risky" lever resulted in the delivery of four pellets...
2016: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/27443194/assessment-of-progressively-delayed-prompts-on-guided-skill-learning-in-rats
#4
Alliston K Reid, Sara E Futch, Katherine M Ball, Aubrey G Knight, Martha Tucker
We examined the controlling factors that allow a prompted skill to become autonomous in a discrete-trials implementation of Touchette's (1971) progressively delayed prompting procedure, but our subjects were rats rather than children with disabilities. Our prompted skill was a left-right lever-press sequence guided by two panel lights. We manipulated (a) the effectiveness of the guiding lights prompt and (b) the presence or absence of a progressively delayed prompt in four groups of rats. The less effective prompt yielded greater autonomy than the more effective prompt...
July 21, 2016: Learning & Behavior
https://www.readbyqxmd.com/read/27312360/interactive-computer-training-to-teach-discrete-trial-instruction-to-undergraduates-and-special-educators-in-brazil-a-replication-and-extension
#5
Thomas S Higbee, Ana Paula Aporta, Alice Resende, Mateus Nogueira, Celso Goyos, Joy S Pollard
Discrete-trial instruction (DTI) is a behavioral method of teaching young children with autism spectrum disorders (ASD) that has received a significant amount of research support. Because of a lack of qualified trainers in many areas of the world, researchers have recently begun to investigate alternative methods of training professionals to implement behavioral teaching procedures. One promising training method is interactive computer training, in which slides with recorded narration, video modeling, and embedded evaluation of content knowledge are used to teach a skill...
December 2016: Journal of Applied Behavior Analysis
https://www.readbyqxmd.com/read/27277119/locomotor-stimulant-and-rewarding-effects-of-inhaling-methamphetamine-mdpv-and-mephedrone-via-electronic-cigarette-type-technology
#6
Jacques D Nguyen, Shawn M Aarde, Maury Cole, Sophia A Vandewater, Yanabel Grant, Michael A Taffe
Although inhaled exposure to drugs is a prevalent route of administration for human substance abusers, preclinical models that incorporate inhaled exposure to psychomotor stimulants are not commonly available. Using a novel method that incorporates electronic cigarette-type technology to facilitate inhalation, male Wistar rats were exposed to vaporized methamphetamine (MA), 3,4-methylenedioxypyrovalerone (MDPV), and mephedrone (4-methylmethcathinone) in propylene glycol vehicle using concentrations ranging from 12...
October 2016: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27115123/exercise-during-early-but-not-late-abstinence-attenuates-subsequent-relapse-vulnerability-in-a-rat-model
#7
R M Beiter, A B Peterson, J Abel, W J Lynch
Exercise has shown promise as a nonpharmacological intervention for addiction, with evidence suggesting a potential utility for relapse prevention. In humans, exercise as an intervention is typically introduced well after the initiation of abstinence, yet neurobiological data from preclinical studies suggest that it may be more effective if initiated during early abstinence. Here, using rat models, we determined whether the beneficial effects of exercise on relapse vulnerability depends on when exercise is first initiated, during early versus late abstinence...
2016: Translational Psychiatry
https://www.readbyqxmd.com/read/27020041/effect-of-5-ht2a-and-5-ht2c-receptors-on-temporal-discrimination-by-mice
#8
Adam L Halberstadt, Ivan S Sindhunata, Kees Scheffers, Aaron D Flynn, Richard F Sharp, Mark A Geyer, Jared W Young
Timing deficits are observed in patients with schizophrenia. Serotonergic hallucinogens can also alter the subjective experience of time. Characterizing the mechanism through which the serotonergic system regulates timing will increase our understanding of the linkage between serotonin (5-HT) and schizophrenia, and will provide insight into the mechanism of action of hallucinogens. We investigated whether interval timing in mice is altered by hallucinogens and other 5-HT2 receptor ligands. C57BL/6J mice were trained to perform a discrete-trials temporal discrimination task...
August 2016: Neuropharmacology
https://www.readbyqxmd.com/read/26964905/the-effects-of-physical-activity-on-impulsive-choice-influence-of-sensitivity-to-reinforcement-amount-and-delay
#9
Justin C Strickland, Max A Feinstein, Ryan T Lacy, Mark A Smith
Impulsive choice is a diagnostic feature and/or complicating factor for several psychological disorders and may be examined in the laboratory using delay-discounting procedures. Recent investigators have proposed using quantitative measures of analysis to examine the behavioral processes contributing to impulsive choice. The purpose of this study was to examine the effects of physical activity (i.e., wheel running) on impulsive choice in a single-response, discrete-trial procedure using two quantitative methods of analysis...
May 2016: Behavioural Processes
https://www.readbyqxmd.com/read/26947579/effect-of-delayed-reinforcement-on-skill-acquisition-during-discrete-trial-instruction-implications-for-treatmen-integrity-errors-in-academic-settings
#10
Regina A Carroll, Tiffany Kodak, Kari J Adolf
We used an adapted alternating treatments design to compare skill acquisition during discrete-trial instruction using immediate reinforcement, delayed reinforcement with immediate praise, and delayed reinforcement for 2 children with autism spectrum disorder. Participants acquired the skills taught with immediate reinforcement; however, delayed reinforcement decreased the efficiency and effectiveness of discrete-trial instruction. We discuss the importance of evaluating the influence of treatment-integrity errors on skill acquisition during discrete-trial instruction...
March 2016: Journal of Applied Behavior Analysis
https://www.readbyqxmd.com/read/26792114/the-effect-of-brief-delays-to-reinforcement-on-the-acquisition-of-tacts-in-children-with-autism
#11
Lina Majdalany, David A Wilder, Lindsay Smeltz, Joshua Lipschultz
We used discrete-trial training to teach 3 children with autism to tact shapes of countries using 3 levels of reinforcement delay for correct responding: 0 s (immediate delivery), 6 s, and 12 s. Two of the 3 participants acquired the targets more quickly in the immediate-delivery condition, suggesting that delays as brief as 6 s may be detrimental to learning tacts for some children.
June 2016: Journal of Applied Behavior Analysis
https://www.readbyqxmd.com/read/26790395/inserting-mastered-targets-during-error-correction-when-teaching-skills-to-children-with-autism
#12
Lauren Plaisance, Dorothea C Lerman, Courtney Laudont, Wai-Ling Wu
Research has identified a variety of effective approaches for responding to errors during discrete-trial training. In one commonly used method, the therapist delivers a prompt contingent on the occurrence of an incorrect response and then re-presents the trial so that the learner has an opportunity to perform the correct response independently. Some authors recommend inserting trials with previously mastered targets between the prompted response and opportunities to respond independently, but no studies have directly examined the benefits of this approach...
June 2016: Journal of Applied Behavior Analysis
https://www.readbyqxmd.com/read/26483649/behavioral-correlates-of-the-decision-process-in-a-dynamic-environment-post-choice-latencies-reflect-relative-value-and-choice-evaluation
#13
Justine Fam, Fred Westbrook, Ehsan Arabzadeh
One characteristic of natural environments is that outcomes vary across time. Animals need to adapt to these environmental changes and adjust their choices accordingly. In this experiment, we investigated the sensitivity with which rats could detect, and adapt to, multiple changes in the environment. Rats chose between two spouts which delivered 5% sucrose rewards with distinct probabilities. Across three phases, reward probabilities changed in size (large or small) and direction (increase or decrease). A discrete trial-structure was used, which allowed the choice process to be decomposed into three distinct response latency measures (choice execution latency, spout sampling duration, and trial-initiation latency)...
2015: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/26374708/rats-quit-nicotine-for-a-sweet-reward-following-an-extensive-history-of-nicotine-use
#14
Carmen Huynh, Justine Fam, Serge H Ahmed, Kelly J Clemens
Drug use may be exacerbated in environments which lack alternative means of engaging in rewarding behaviour. When alternative rewards are available, drug use may decrease-an effect that can be harnessed for therapeutic benefit. This idea is particularly well-supported by recent preclinical evidence demonstrating that a majority of rats will readily choose a potent non-drug reward over cocaine or heroin. Here we examine whether the same holds true for nicotine, a drug considered to have one of the highest addiction liabilities amongst drugs of abuse...
September 16, 2015: Addiction Biology
https://www.readbyqxmd.com/read/26281795/the-effects-of-reinforcement-magnitude-on-skill-acquisition-for-children-with-autism
#15
Amber R Paden, Tiffany Kodak
We examined the effects of reinforcement magnitude on skill acquisition during discrete-trial training. After conducting a magnitude preference assessment, we compared acquisition during conditions with large and small magnitudes of edible reinforcement to a praise-only condition. Although all participants showed a preference for the large-magnitude reinforcer, preference did not predict the magnitude that produced the fastest skill acquisition.
December 2015: Journal of Applied Behavior Analysis
https://www.readbyqxmd.com/read/25914128/central-muscarinic-cholinergic-involvement-in-serial-pattern-learning-atropine-impairs-acquisition-and-retention-in-a-serial-multiple-choice-smc-task-in-rats
#16
Amber M Chenoweth, Stephen B Fountain
Atropine sulfate is a muscarinic cholinergic antagonist which impairs acquisition and retention performance on a variety of cognitive tasks. The present study examined the effects of atropine on acquisition and retention of a highly-structured serial pattern in a serial multiple choice (SMC) task. Rats were given daily intraperitoneal injections of either saline or atropine sulfate (50mg/kg) and trained in an octagonal operant chamber equipped with a lever on each wall. They learned to press the levers in a particular order (the serial pattern) for brain-stimulation reward in a discrete-trial procedure with correction...
September 2015: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/25913105/a-comparison-of-error-correction-procedures-on-skill-acquisition-during-discrete-trial-instruction
#17
Regina A Carroll, Brad T Joachim, Claire C St Peter, Nicole Robinson
Previous research supports the use of a variety of error-correction procedures to facilitate skill acquisition during discrete-trial instruction. We used an adapted alternating treatments design to compare the effects of 4 commonly used error-correction procedures on skill acquisition for 2 children with attention deficit hyperactivity disorder and 3 children with autism spectrum disorder. For all participants, multiple error-correction procedures were effective; however, 1 or 2 specific error-correction procedures led to more efficient skill acquisition for each individual...
2015: Journal of Applied Behavior Analysis
https://www.readbyqxmd.com/read/25911305/dismantling-the-active-ingredients-of-an-intervention-for-children-with-autism
#18
Melanie Pellecchia, James E Connell, Rinad S Beidas, Ming Xie, Steven C Marcus, David S Mandell
This study evaluated the association of fidelity to each of the components of the Strategies for Teaching based on Autism Research (STAR) program, a comprehensive treatment package for children with autism that includes discrete trial training, pivotal response training, and teaching in functional routines, on outcomes for 191 students ages 5-8 years in a large public school district. Fidelity to all components was relatively low, despite considerable training and support, suggesting the need to develop new implementation strategies...
September 2015: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/25869079/adults-with-autism-spectrum-disorder-as-behavior-technicians-for-young-children-with-autism-outcomes-of-a-behavioral-skills-training-program
#19
Dorothea C Lerman, Lynn Hawkins, Conrad Hillman, Molly Shireman, Melissa A Nissen
Adults with autism spectrum disorder (ASD), who were interested in working as behavior technicians for young children with autism, participated in 2 experiments. Participants included 5 adults with Asperger syndrome or pervasive developmental disorder not otherwise specified, 19 to 23 years old, and 11 children with autism, 3 to 7 years old. In Experiment 1, training of the adults focused on the implementation of mand training via incidental teaching. Experiment 2 focused on teaching participants to use discrete-trial training (DTT) with children who exhibited problem behavior...
2015: Journal of Applied Behavior Analysis
https://www.readbyqxmd.com/read/25839895/agonist-and-antagonist-effects-of-cytisine-in-vivo
#20
Elena V Radchenko, Olga A Dravolina, Anton Y Bespalov
Varenicline, the most successful smoking cessation aid, is a selective partial agonists at α4β2* nicotinic receptors. Its efficacy is likely to be shared by other drugs with similar receptor action, including cytisine. The present study aimed to characterize behavioral effects of cytisine compared with nicotine using locomotor activity tests, intracranial self-stimulation of ventral tegmental area (discrete-trial threshold current intensity titration procedure), drug discrimination (0.6 mg/kg nicotine from vehicle), physical dependence (osmotic minipumps delivering 6 mg/kg/day of nicotine) and intravenous nicotine self-administration (0...
August 2015: Neuropharmacology
keyword
keyword
112587
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"