Association for Behavior Analysis International

This talk will first address what is currently known about the genetic underpinnings of autism, and how these overlap with susceptibilities to other neuropsychiatric conditions. The impact of genetic susceptibility to autism on children’s sensitivity and response to the environment will be discussed, with implications for approaches to behavioral support at respective stages of development. Next, the treatment of psychiatric comorbidities and their effect on adaptive functioning in autism will be reviewed. Finally, the goals for a next wave of research on the frontiers of genetics, early mind/brain development, and behavioral neuroscience will be discussed, specifically with respect to the promise of higher-impact intervention for affected children.

Keller and Schoenfeld (1950) offered a unique behavioral perspective on conceptualization and categorization, one that has proven to be dramatically out of step with mainstream cognitive theory. Keller and Schoenfeld's behavioral approach has inspired Dr. Wasserman's research into conceptualization and categorization by nonhuman animals. Using a system of arbitrary visual tokens, Dr. Wasserman and his colleagues have built ever-expanding nonverbal "vocabularies" in pigeons through a variety of different discrimination tasks. Pigeons have reliably categorized as many as 500 individual photographs from as many as 16 different human object categories, even without the benefit of seeing an item twice. Their formal model of categorization effectively embraces 25 years of empirical evidence as well as generates novel predictions for both pigeon and human categorization behavior. Comparative study should continue to elucidate the commonalities and disparities between human and nonhuman categorization behavior; it also should explicate the relationship between associative learning and categorization.

Recent advances in the cognitive science of learning have important implications for instructional practices at all levels of education. For example, cognitive research has identified one strategy that promotes complex learning called retrieval practice: Practicing actively reconstructing one's knowledge while studying has potent effects on long-term learning. Yet, when students monitor and regulate their own learning, they often choose to engage in inferior strategies like repetitive reading, and the ultimate consequence is poor learning. This talk provides an overview of Dr. Karpicke's research program on retrieval-based learning. In recent work, they have extended retrieval practice to meaningful learning of complex educational materials, converted existing classroom activities into retrieval-based activities, and developed new computer-based learning methods for implementing retrieval-based learning. Incorporating retrieval practice into educational activities is a powerful way to enhance learning.

Training sniffer dogs for specialty work, especially in the field, requires an unusual set of skills and knowledge: Fluid dynamics, analytical chemistry, psychophysics, microclimatology, and micrometeorology. Dogs are complex animals, and even the lab work (during training, or for diagnostic work) can have its challenges with long sessions of repetitive behaviors (e.g., responses in go/no-go tasks) with few stimuli and a sterilized and aseptic environment. Basic questions arise: Should we try to manipulate the dog, the stimuli, or the whole environment? When are interferences too much--or too little? And how can we train our dogs to succeed and keep performance steady over time? Dr. Simon Gadbois will address four main issues: (1) The role of motivation; (2) olfactomotor activation; (3) affordance training; and (4) understanding the where, what, and how much sub-systems of olfactory processing. He will, for example, discuss how modern training and assessment techniques treat olfactory detection and discrimination as a memory task when in fact, it is a fundamental sensory-perceptual task. Testing procedures that are mnemonically challenging should instead focus on perceptually challenging tasks. Dr. Gadbois will discuss how smell is a percept that needs to be processed in context. Much of this talk is derived from, and expands on, Gadbois& Reeve (2014).

Behavior analysts interested in learning how behavioral techniques are integrated with and understanding sensory processing to teach dogs how to sniff out invasive species and species at risk in conservation work.

From a behavioral perspective, psychoactive drugs are powerful positive and negative reinforcers and drug addiction reflects an acquired syndrome in which drug reinforcement becomes prepotent in an individual’s life. The discipline of behavioral economics integrates concepts and methods from psychology and economics to understand human behavior, including importing microeconomic methods for studying choices among reinforcers. This lecture will review recent work developing the purchase task methodology, which uses microeconomic demand curve analysis to characterize the relative reinforcing efficacy of alcohol, tobacco, and other drugs. In addition to improving the assessment of individual variation in the value of a drug as a reinforcer, this approach has significantly contributed to the measurement of acute motivation in laboratory studies, to the understanding of the neural basis of drug consumption decision making, and to understanding treatment mechanisms. As such, the purchase task approach provides a translational platform for advancing both basic and clinical science.