Presentation on theme: "Catherine Taylor-Santa Caldwell College Behavior Analysis of Child Development October 2012."— Presentation transcript:
Catherine Taylor-Santa Caldwell College Behavior Analysis of Child Development October 2012
Review Discussion: Malcuit and Pomerleau’s chapter Studies Why the “cognitive revolution”? Operant chamber model Research Kim Kraebel Research Thoughts
Habituation US presented rapidity until decrease in UR Youtube video (https://www.youtube.com/watch?v=dlilZh60qdA&feature=channel&list=UL)https://www.youtube.com/watch?v=dlilZh60qdA&feature=channel&list=UL Operant Conditioning Form of learning in which a voluntary response is strengthened or weakened, depending on the consequences which follow the behavior Infants Affected their environment Affected by the effects their actions bring
Rheingold et al. (1959) 3 months old Spontaneous vocalizations Social stimuli Increased vocalizations
Meltzoff & Kuhl (1989) 4 months old + Change auditory stimulus Head turn Puppets Rovee-Collier and colleagues Infants Conjugate reinforcement Infant kicks Mobile moves 3 min baseline/retention 9 min acquisition 3 min immediate retention test/extinction Sessions conducted 1 day+ apart
Infants Visual stimulus Infant gaze Continued visual stimulus Interesting Bornstein and Sigmand (1986) & Slater (1997) indicated infants who Habituate more rapidly Have short looking time Greater preference for novelty Higher IQ’s later
Could difficulties involving habituation represent a sign of or even predict a developmental delay? Maybe…But I was not able to find any research specifically on this. Toddlers with elevated autism symptoms showed slowed habituation to faces (Webb et al., 2010)
Some infant behaviors Sucking Vocalizations Head & limb movements Visual fixations Important implications Generality of operant reinforcement principles Infant behaviors could be reinforced by changes behavior brings in environment
A type of automatic reinforcer in which the stimulus changes produced by the behavior increase the frequency of that behavior under similar circumstances. (Vaughan & Michael, 1982) These reinforcers have a short life. Unlike Primary reinforcers Secondary reinforcers Modification of stimulus or novel stimulus brings back rate of responding Most potent means to study behaviors of developing children
Experiments demonstrate generality of the principles and efficacy of techniques of operant learning…so why the “cognitive revolution”? 1. Behavior analysts stuck on discrepancies between human and animals 2. Principle characteristic of ecological reinforcers Convenient qualities Seen as indicators 3. Operant procedure Easy to implement Variety of questions on early cognitive processes answered
Operant research in human learning follow operant chamber model Relevant factors may not be effectively isolated VS. Lever Press Primary Reinforcer Controlled Environment Game-like Behavior Ecological Reinforcer Freedom
Baron et al. (1991) 1. Experimental variable are imposed long enough to manifest their effects 2. Behavior is studied as a steady state 3. Subjects are matched Too Short Obsolete
For many laboratories, learning contexts analyze in terms of exploration and problem- solving Response rates not the most appropriate way to assess if learning has taken place
Operant chamber model to study infant learning is not adequate with ecological reinforcers Not relevant within context of problem-solving analysis of operant behavior Rate measure of operant behaviors do not appear most appropriate way to asses learning
Pomerleau et al. (1992) Single-subject designs “Non-perfect” contingency Measures Duration % of opportunities Latency measures More relevant stimuli
Voltair, Gewirtz,& Pelaez (2005) Synchronous reinforcement- reinforcing stimulus provided as long as individual engages in the behavior Conjugate reinforcement - some property of a reinforcing stimulus varies proportional to a specific response attribute (e.g., rate, amplitude)
Stimulus elicits head turn and gaze orientation Habituation Repeated presentations Allow infant to allocate behavioral resources to stimuli of greater relevance Signal Followed by appearance of attractive stimulus Stimulus has a functional value Behavior will ceases when Stimulus loses its reinforcing value Another behavior becomes more probable
This idea was met with resistance Informational processing model: Contains more information to be processed Functional model: More reinforcing
Sort out the effect of 2 functional values of stimuli on orienting response elicitation Forty eight 4-month-olds Three conditions presentations 2s visual stimulus presentations 2s visual stimulus accompanied by another event 3. Visual stimulus on synchronous schedule Visual stimuli 4x4 checkerboard pattern 8x8 checkerboard pattern 1 st pattern 2 nd 2 test trials 1 st 2 dishabituation trials
Suggest the importance of taking into account the functional value of stimuli when analyzing infant attention Stimulus complexity is indeed a factor but will most likely be overshadowed by a stimulus with a signaling function
Looked at the respondent dimension of orienting response Separate respondent and operant process Respondent- Stimulus elicits head turn Operant- Head turn makes stimulus appear 4 groups of 16 4 month-olds
ConditionDescription Condition 1 1 stimulus a) elicits head turn, b) signals reinforcement, 3) synchronously reinforces visual exploration Condition 21 stimulus constantly present Condition 3 Stimulus appears if head turns toward illuminated surface. No eliciting stimulus. SD different from the reinforcing stimulus (signaled operant) Condition 4 Stimulus appears if head turns to non- signaled point in space. No eliciting stimulus. No SD.
ConditionResults Condition 1 (elic, sig, SR+) Stimulus looked at less than Condition 3 & 4 but more than Condition 2 Condition 2 (const pres) Stimulus looked at the least Condition 3 (no elic, SD) Stimulus looked at the longest Condition 4 (no elic, no SD) Stimulus looked at the longest
Operant process, whether signaled or not, seems to be more potent in sustaining infant attention than Stimulus that is always present A stimulus whose sudden appearance triggers attention
Associate Professor of Psychology at SUNY Cortland PhD in Experimental Psych- learning and memory Animal models Post-doc research at Institute for Basic Research in Developmental Disabilities in NYC Developmental perception infants 2-9 mo Infant and Child Studies Project Cognition in 3 & 5 mo infants A runner =)
Amodal- information that is not specific to an individual sensory system Kraebel, 2009; Kraebel, 2012a & 2012b Kraebel et al., 2004 (computer measures)
Infants given matching redundant amodal properties (e.g., viewed cylinders while holding a cylinder) facilitated operant learning Infants given mismatching redundant amodal properties (e.g., viewed cylinders while holding a rectangular cube) inhibited operant learning Why?
Ample room for more research Early autism detection Multi-sensory approach Are there any questions, other than is this thing glued to my head? Thanks!
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