Operant modulation of low-level attributes of rule-governed behavior by nonverbal contingencies

A low-level and nonsalient attribute of behavior (i.e., speed of pressing) was subjected to differential nonverbal operant reinforcement when rules governed a high-level attribute of that behavior (i.e., counting by means of key presses). Unknown to the subjects, reinforcers depended on reduced (slow group) or increased (fast group) speed of pressing rather than on the correct number of presses. The reinforced attribute was modulated according to the arranged speed contingencies independently of the instructed task and independently of subjects' awareness of the critical contingency. A control group receiving random reinforcers demonstrated no systematic speed changes. Possible mechanisms related to behavior changes of this type were examined and discussed, and it was concluded that the behavior changes observed in this situation could be attributed to operant conditioning. The results substantiate the assumption that nonverbal operant contingencies may modulate low-level and nonsalient attributes of rule-governed behavior.     

Good behavior game: effects of individual contingencies for group consequences on disruptive behavior in a classroom

Out-of-seat and talking-out behaviors were studied in a regular fourth-grade class that included several "problem children". After baseline rates of the inappropriate behaviors were obtained, the class was divided into two teams "to play a game". Each out-of-seat and talking-out response by an individual child resulted in a mark being placed on the chalkboard, which meant a possible loss of privileges by all members of the student's team. In this manner a contingency was arranged for the inappropriate behavior of each child while the consequence (possible loss of privileges) of the child's behavior was shared by all members of this team as a group. The privileges were events which are available in almost every classroom, such as extra recess, first to line up for lunch, time for special projects, stars and name tags, as well as winning the game. The individual contingencies for the group consequences were successfully applied first during math period and then during reading period. The experimental analysis involved elements of both reversal and multiple baseline designs.     

Effects of mixed reinforcement contingencies on adults' control of children's behavior

Two severely retarded boys, each a member of a different play group, experienced three regimes of reinforcement from adults [contingent, noncontingent, and mixed (contingent and noncontingent)]. The agent of contingent reinforcement acquired stimulus control of the subjects' behavior; the noncontingent agent did not. The agent of the mixed schedule of reinforcement did not gain control, but aspects of his behavior came to function as cues. The mixed adult's withholding reinforcement in the absence of the target behavior (cooperative play) evoked cooperative play, whereas his presenting free reinforcement resulted in the subjects' remaining in their inactive, baseline positions.     

Precurrent contingencies: Behavior reinforced by altering reinforcement probability for other behavior

The present study explored the effects of a precurrent contingency in which one (precurrent) activity increased the reinforcement probability for another (current) activity. Four human subjects responded on a two-key computer mouse. Each right-key press was reinforced (points exchangeable for money) with .02 probability. In one condition (no precurrent contingency), pressing the left key had no scheduled consequence; in another condition (precurrent contingency), pressing the left key increased the reinforcement probability for right-key responding to .08 for 15 s. Initial exposure to the precurrent contingency resulted in acquisition of precurrent left-key responding for 3 subjects, but for the 4th subject a special contingency was required. Right-key responding occurred at a high stable rate across the conditions. Changeovers to left-key responding dropped to near zero when the precurrent contingency was absent and were maintained at enhanced levels when the precurrent contingency was present. Contacts with the left key consisted of short response runs. Right-key responses were more frequently emitted within 15 s of a left-key response when the precurrent contingency was present, an efficient adaptation to the contingency. Continued research on precurrent behavior may produce insights into complex phenomena such as autoclitics and self-control.     

Collegiate contingencies

We discuss contemporary trends and developments that affect colleges and universities and describe several central contingencies that have given rise to, maintain, and operate in response to these trends and developments. We identify the differential impacts of these contingencies on faculty, students, and administrators in various types of higher education institutions. These contingencies are sources of conflict between and among these three groups within the academy that, we argue, cause significant instability in contemporary academe. We discuss prominent domains of this dis-equilibrium and propose several general interventions to address the sources of the instability.     

Applying "group" contingencies to the classroom study behavior of preschool children

A group of 12 children were enrolled in a preschool class. During the first experimental stage they participated in special events contingent on token earning. Tokens were acquired by engaging in a variety of study behaviors. After a level of study behavior was established under this contingency, the special events were provided noncontingently. Study behavior declined throughout the noncontingent stage. Reestablishing the original contingencies produced an immediate return to the initial level of study behavior. Noncontingent special events reduced the amount of independent study, group participation, and cooperative study. The study behavior of each child was altered in the same direction, though differences in the magnitude of effects from child to child were observed.     

Two visual mechanisms underlying the behavior of fish

Summary Studies of motion-detection by fish reveal two separate processes, which are hypothetically linked to different kinds of behavior. Furthermore, studies of interocular transfer with mirror-image shape discriminations also indicate two distinct mechanisms for the representation of visual directions. From these two kinds of experiment, it seems that visual processes subserving orientation of the fish to a moving object should be clearly distinguished from processes by which the fish evaluates the identity or activity of the object.

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Zusammenfassung Untersuchungen der Bewegungswahrnehmung von Fischen zeigen zwei verschiedene Prozesse auf, die mit zwei verschiedenen Verhaltensweisen in Beziehung gesetzt werden. Eine Analyse des interokularen Transfers mit Unterscheidung spiegelbildlicher Formen läßt außerdem erkennen, daß zwei verschiedene Mechanismen für die Repräsentation visueller Richtungen verantwortlich sind. Aus diesen Experimenten wird geschlossen, daß jene visuellen Prozesse, welche der Orientierung des Fisches in bezug auf ein sich bewegendes Objekt dienen, scharf unterschieden werden sollten von denen, durch welche der Fisch die Identität oder Aktivität des Objektes beurteilt.

     

Use of small group contingencies and special activity times to manage behavior in a first-grade classroom

Management procedures were succesfully employed to decrease the frequency with which first-grade children left small instructional centers. To decrease the out-of-center behavior, access to a 30-minute special activity time was made available to different groups as a function of everyone's remaining within his group instructional center. One occurrence of out-center behavior resulted in a cost of ten minutes of special activity time for the children in that center. The frequency of out-of-center behaviors quickly decreased from Baseline I to the Modification I condition, increased when the modification condition was removed, and decreased again in Modification II.Observations made on the percent of the children's appropriate social and academic behaviors showed increases during the modification conditions. Also, the time the teacher spent in responding to inappropriate behavior decreased and the time spent in instruction increased during the modification conditions.     

Interdependent and independent group contingencies with immediate and delayed reinforcement for controlling classroom behavior

Group-oriented contingency systems have enjoyed widespread acceptability, use, and success in classroom settings. Despite their increased use, group contingency systems have at least two disadvantages. First, one or more students may spoil reinforcement for the rest of the class, and, second, the behavior of the entire class often deteriorates as a result of the loss of access to reinforcement. The present study investigated the use of an interdependent group contingency for on-task and disruptive behavior along with an independent group contingency for disruptive behavior to prevent children from spoiling group reinforcement. Immediate and delayed consequences were built into the program to circumvent behavioral deterioration. The results demonstrated that the combination of group contingency systems and immediate and delayed consequences were effective in reducing levels of off-task and disruptive behavior and in increasing on-task behavior. The findings were discussed in terms of the combination of treatment components, potential for generalization, the need for empirical research on social validity, and the practicality and effectiveness of this intervention package for psychologists in the schools.     

Remote effects of aversive contingencies: Disruption of appetitive behavior by adjacent avoidance sessions

Disruption of ongoing appetitive behavior before and after daily avoidance sessions was examined. After baselines of appetitive responding were established under a fixed-interval 180-s schedule of food presentation, 4 rats were exposed to 40-min sessions of the appetitive schedule just prior to 100-min sessions of electric shock postponement, while another 4 rats received the 40-min appetitive sessions just following daily sessions of shock postponement. In all 8 subjects, fixed-interval response rates decreased relative to baseline levels, the effect being somewhat more pronounced when the avoidance sessions immediately followed. The disruption of fixed-interval responding was only partially reversed when avoidance sessions were discontinued. During the initial exposure to the avoidance sessions, patterns of responding under the fixed-interval schedule were differentially sensitive to disruption, with high baseline response rates generally more disturbed than low rates. These disruptions were not systematically related to changes in reinforcement frequency, which remained fairly high and invariant across all conditions of the experiment; they were also not systematically related to the response rates or to the shock rates of the adjacent avoidance sessions. The results, while qualitatively resembling patterns of conditioned suppression as typically studied, occurred on a greatly expanded time scale. As disruption of behavior extending over time, the present data suggest that some forms of conditioned suppression are perhaps best viewed within a larger temporal context.     

Relative influences of establishing operations and reinforcement contingencies on self-injurious behavior during functional analyses

In the typical functional analysis in which the antecedent and consequent events associated with problem behavior are manipulated, the control condition involves elimination of both the relevant establishing operation (EO) and its associated contingency through a schedule of noncontingent reinforcement (usually fixed-time [FT] 30 s). In some functional analyses, however, antecedent events are manipulated in the absence of differential consequences, and a common test condition in such analyses also involves the delivery of reinforcement on an FT 30-s schedule. Thus, the same schedule of reinforcement (FT 30 s) is not considered to be an EO in the former type of analysis but is considered to be an EO in the latter. We examined the relative influences of EOs and reinforcement contingencies on problem behavior by exposing 6 individuals who engaged in self-injurious behavior (SIB) to four combinations of functional analysis conditions: EO present/contingency present, EO absent/contingency present, EO present/contingency absent, and EO absent/contingency absent. Results indicated that the only condition in which high rates of SIB were observed consistently was one in which the EO and the reinforcement contingency were both present. Implications of these results for the design of functional analysis test and control conditions are discussed.     

Graphics for three-term contingencies

A source of confusion in the general readership regarding the relationship of operant to S-R psychology is traced to the use of graphics in the behavioral literature. A case is made for supplementing traditional linear notation systems with triangular graphics to illustrate three-term contingencies. Constructing discriminative stimuli in this fashion makes the distinction between operant and S-R formulations more conspicuous and reveals more comprehensive relationships for an extended radical behaviorism.     

Personality factors underlying coronary prone behavior patterns among employees

The structure of the coronary prone behavior syndrome was mapped onto the personality trait domain with a sample of 222 adult men and women (mean age=31). The subjects completed the Sixteen Personality Factor (16PF) and the Jenkins Activity Survey (JAS) questionnaires and canonical correlation analysis was used to derive the structure of common variance between the two sets of scales. Coronary prone behavior, when viewed within personality source trait structure, can be thought of as heavily influenced by anxiety and extraversion. Additional regression analyses were conducted to analyze interdomain relationships among the 16PF and JAS.     

Choice and response contingencies

Two experiments investigated the extent to which response contingencies influence the choice between two schedules of reinforcement by exposing pigeons to a concurrent-chains procedure in which reinforcers in one terminal link were response-independent, and in the other terminal link, response-dependent. In Experiment 1, the pigeons were indifferent between an aperiodic, response-independent schedule and an aperiodic, response-dependent schedule that required a minimum rate of responding. This finding limits the generality of a required-rate contingency as a determinant of choice, which contingency had been previously demonstrated in a context of periodic reinforcement to evoke preference for an alternate schedule. In Experiment 2, the pigeons preferred a periodic, response-independent schedule to a periodic, response-dependent schedule that shared a feature with a required-rate schedule: there was a requirement to respond early in the interreinforcement interval, when responding produced reinforcement only later. The results of the two experiments suggest the following general interpretation: pigeons prefer a second schedule to the extent that the response contingencies of the first schedule must be satisfied during discriminable periods of nonreinforcement.