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PubMed1979

Emergence of interoceptive and exteroceptive control of behavior in rats.

The role of exteroceptive and interoceptive aversive stimuli in rats 2 to 14 days old was investigated according to an odor aversion paradigm. Amyl acetate odor was paired with eigher peripheral shock, intraperitoneal shock, or lithium chloride poisoning. Intraperitoneal shock was an effective unconditioned stimulus at all ages and produced odor aversions comparable to lithium chloride poisoning; peripheral shock, however, was effective only in rats 10 days of age or older. Interoceptive control of aversively motivated behaviors thus seems to develop before exteroceptive control, and the failure of previous studies to find reliable learning and retention of shock-motivated behaviors before 8 to 10 days of age may be attributable to the site to which shock was applied rather than to insensitivity to shock per se.

Age Factors↗
PubMed2000

Motivations to control drinking behavior in abstainers, moderate, and heavy drinkers.

Motives and motivational concepts to control quantity (Q) and frequency (F) of alcohol consumption were investigated in 192 participants using a questionnaire of motives to control drinking (MCD-Q/F) developed earlier. The daily quantity of consumption was assessed by the "30 day by beverage questionnaire." Participants were grouped into heavy or moderate drinkers (limits: females 40, males 60 gram alcohol/day) and abstainers. Analyses of motives showed the importance of car driving, controlling appetite/desire, and prevention of impaired mental performance. The relative impact of motivational concepts were analyzed by cluster analysis of motives revealing three clusters: 1) emotional concepts/fear of addiction, 2) physiological sensations/interaction with concrete actual plans, 3) cognitive concepts (plans, self-control, no impairment/no desire). MANOVA of MCD-Q/F indicate highest scores for moderate drinkers and significant lower scores in heavy drinkers in controlling frequency of drinking (MCD-F). Group effect for emotional concepts failed significance, higher scores of physiological concepts were found in imbibers compared to abstainers, and scores of cognitive concepts were lower in heavy drinkers. Results indicate that for imbibers a reduced motivation to control frequency of drinking as well as low scores in cognitive concepts and a trend to high scores in emotional concepts are associated with heavy drinking.

Adult↗
PubMed1985

A health belief model approach to adolescents' fertility control: some pilot program findings.

We report initial findings from a community-based intervention intended to strengthen unmarried teenagers' fertility control behaviors (i.e., abstinence or consistent contraceptive usage). The Health Belief Model (HBM) was used as a conceptual framework for developing curriculum materials and for evaluating a 15-hour educational program targeted at 13- to 17-year-olds of both genders. Interview data pertaining to sexual and contraceptive perceptions, knowledge, and behaviors were collected three times in a no-control, short-term, longitudinal study design: (1) just before; (2) immediately after; and (3) three to six months following the intervention. Dependent variables of major interest were changes in perceptions, knowledge, and self-reported fertility control behaviors. Based on data from the 120 teenagers who completed the followup (80% of those completing the intervention), we found: (1) consistent contraceptive usage increased significantly; (2) changes in HBM-based contraceptive perceptions and sexual knowledge at immediate post-testing were predictive of increases in contraceptive usage at longer followup; and (3) the majority (62%) remained abstinent from pre-intervention to followup. These findings, study limitations, and suggestions for a future controlled study are then discussed.

Adolescent↗
PubMed2001

Is family-based behavioral weight control appropriate for severe pediatric obesity?

OBJECTIVE: Although the efficacy of family-based behavioral treatment for moderate pediatric obesity has been well established, few studies have focused on the treatment of severe obesity. We sought to evaluate the acceptability and feasibility of a family-based intervention for severely obese children. METHOD: Twenty-four families with children aged 8-12 years who were > or =160% of their ideal body weight participated in a 10-12-session behavioral intervention. Participants were weighed and their heights measured at the start of each treatment session and during a follow-up visit 4-13 (M = 7.8) months posttreatment. Children also completed measures of depressive symptoms and anxiety at pretreatment, posttreatment, and follow-up, and eating attitudes were assessed at pretreatment and follow-up. RESULTS: One third of the families did not complete treatment. However, children who completed the program lost a significant amount of weight and reported significant improvements in depression, anxiety, and eating attitudes that were maintained over time. DISCUSSION: A short-term, family-based behavioral intervention was successful in moderating weight gain for most children and had positive effects on children's mood and eating disorder symptoms. Future randomized, controlled trials of longer interventions are necessary to determine the success of this approach.

Adult↗
PubMed1988

Use of benzodiazepines to control disruptive behavior in inpatients.

The author reviews prior evidence and presents data from his prospective study comparing intramuscular lorazepam with intramuscular haloperidol for control of extreme, agitated psychotic behavior; the data demonstrate that lorazepam is effective and has fewer side effects than haloperidol. The effective intramuscular dose is 1 to 2 mg in conjunction with ongoing neuroleptic antipsychotic treatment. Lorazepam does not prevent future disruptive behavior, and data do not support its use as an agent for maintenance therapy.

Aggression↗
PubMed1977

Predation, aggression, and activity levels in food-deprived sunfish (Lepomis macrochirus and L. gibbosus): motivational interactions.

Three experiments investigated the effects of food deprivation on several behavioral categories in two species of sunfish. In Experiment 1, predatory behavior and general activity were observed under five levels of deprivation. For both species, predation measures increased in a similar negatively accelerating manner with increasing deprivation, while activity changed in a more complex fashion. Experiment 2 examined the effects of deprivation on activity in a novel environment and showed that the deprivation effects of Experiment 1 were masked by the response to the new setting. In Experiment 3, measures of aggression toward intruders of each species were recorded from resident fish of both species under three levels of food deprivation. Both species were more aggressive toward conspecifics, and bluegills were more aggressive overall. Aggression was significatly influenced by food deprivation, with the effects dependent on the species making up the pair. Theories of motivational summation, generalized drive, and activity-mediated aggression were unable to explain the differential effects of hunger on the three behavioral categories observed. A dynamic boundary-state model of behavior control was found to predict the motivational interactions observed between distinct behavioral control systems.

Aggression↗
PubMed1970

Behavioral engineering: control of posture by informational feedback.

The effects of informational feedback on a socially undesirable behavior were studied. The feedback was a mild vibrotactile stimulus and the response was slouching. When subjects slouched, a behavioral engineering apparatus provided vibrotactile stimulation to the shoulder. All subjects slouched less when stimulation was provided. A procedural control revealed that slouching will decrease because of the informational aspect of the stimulus consequence and not because of its aversive properties. When the subjects were instructed to slouch, the effects of feedback were reversed: feedback increased, rather than decreased, slouching. These results indicate that the effect of feedback for a response depends on the subject's motivation to perform that response. It is suggested that informational feedback could be used more widely as a therapeutic procedure to modify human behaviors, but only those behaviors that a patient is strongly motivated to change.

Journal Article↗
PubMed2004

Factors associated with breastfeeding intentions of African-American women at military health care facilities.

Studies have shown that 21% to 51% of African-American women (AAW) reported breastfeeding, lagging behind Caucasian (61%-71%) and Hispanic (67%-71%) women despite breastfeeding's health benefits. This study aimed to assess AAWs "intent" to breastfeed and describe the relationship among knowledge, age, education, parity, and selected factors of the theory of planned behavior with their intent. The theory of planned behavior assumes intentions are immediate antecedent of behavior. Voluntary surveys of 95 AAW who intended to breastfeed were collected at two U.S. military prenatal clinics. The results were that breastfeeding intent was related to AAW's age, education, and perceived subjective norms (social pressures) and behavioral control (success in breastfeeding); only age and perceived behavior-control best "predicted" breastfeeding intent. Healthy People 2010's objectives are to increase numbers to 75% of women who breastfeed. This study notes the importance of health care providers in promoting AAW to breastfeed by initiating culturally sensitive strategies that enhances AAW's social support and personal confidence toward breastfeeding success.

Adult↗
PubMed2000

Should patients have control over their own health care?: empirical evidence and research issues.

Available research indicates that purported patient insufficiencies in ability to process information and make rational and reliable decisions have likely been overestimated. Furthermore, data indicate that nonscientific factors often play a role in physician decision-making and that physicians may not value different health outcomes in the same way as patients. Though the data on patient cognitive functioning are limited because of heavy reliance on patient responses in hypothetical versus actual decision-making situations, these findings lend credence to arguments that patients should have increased control over their own health care. Research on the effects of interventions designed to enhance patient control indicates that: (a) patients generally respond positively to increased information, but few studies have evaluated the effects of information as a precursor to decision-making; (b) the few studies using simple behavioral control interventions have shown generally positive effects on a range of patient outcomes; and (c) studies of decisional control (with breast cancer patients) have had experimental confounds which prohibit conclusions regarding effectiveness. Areas in greatest need of research include: (a) further exploration of the utility of noninvasive behavioral control interventions in different settings; (b) measuring the impact of control manipulations on patient perception of control as well as patient control-related behaviors; (c) matching patient differences in desire for control to experimental conditions and to physician differences in receptiveness to patient control; and (d) clinical trials in which patients facing critical decisions in trade-off situations are actually given a choice.

Attitude to Health↗
PubMed2001

The theory of planned behavior as a model of intentions for fighting among African American and Latino adolescents.

OBJECTIVES: To test the theory of planned behavior as a model for predicting and understanding behavioral intentions for fighting among inner-city adolescents and to determine whether its predictive power differs as a function of ethnicity (African American versus Latino). METHODS: Participants were 956 (511 females, 445 males) African American (n = 702) and Latino (n = 254) adolescents (mean age = 12.72 years; SD = 1.12) recruited from sixth, seventh, and eighth grade classes in public middle schools serving two inner-city communities in New Jersey who completed self-administered, confidential questionnaires. RESULTS: Consistent with the theory of planned behavior, hierarchical multiple regression analyses revealed that attitudes, subjective norms, and perceived behavioral control predicted intentions for fighting. Although the theory of planned behavior accounted for substantial variance in intentions to fight in both ethnic groups, it accounted for greater variance among Latinos than among African Americans. The strength of the relations of subjective norms and perceived behavioral control to intentions was similar in the two groups. but the relation of attitudes to intentions to fight was significantly stronger among Latinos. CONCLUSIONS: The findings strongly suggest that the theory of planned behavior provides a potentially useful conceptual framework for guiding the creation of interventions for African American and Latino adolescents that are designed to reduce violent behavior and the tragedies that such behavior leaves in its wake.

Adolescent↗
PubMed1994

Steroid-neuropeptide interactions that control reproductive behaviors in an amphibian.

Investigations into the neuroendocrine regulation of reproductive behaviors in an amphibian (Taricha granulosa) reveal the same basic repertoire of chemical messengers as regulators of male behaviors in other vertebrates. These studies have identified seasonal neural interactions between gonadal steroids and neuropeptides that facilitate male courtship behavior. In addition, this species has served to elucidate how stress-induced suppression of courtship is mediated by corticosterone action through a neuronal membrane receptor and subsequent, rapid neurophysiological effects. These findings indicate that a principal mechanism by which steroids and neuropeptides control male reproductive behavior is the modulation of neural processing of specific sensory stimuli.

Androgens↗
PubMed2005

Evidence indicating participation of the serotonergic system in controlling feeding behavior in Coturnix japonica (Galliformes: Aves).

We investigated participation of the brain serotonergic system in food intake control by using oral and systemic administration of serotonin precursors in quails (Coturnix japonica). Dietary supplemental tryptophan (0.1-50.0 g/kg) provoked a dose-dependent inhibition of food intake during a 5-h observation period, which persisted up to 24 h for doses of 30.0 and 50.0 g/kg. Normally fed and fasted animals treated with hydroxytryptophan (12.5-50.0 mg/kg) by the intracoelomic route showed an acute inhibition of food intake. Hypophagia in fasted birds was only effective when the precursor was administered immediately before food presentation. A similar response was obtained by administering serotonin (0.125-2.5 mg/kg, sc), with animals showing a hypnogenic response within the first ten minutes after administration, suggesting that, in contrast to mammals, the amine crosses the blood-brain barrier in quails. Administration of hydroxytryptophan at all doses tested induced significant dipsogenic behavior despite the concomitant hypnogenic response. The results suggest the involvement of serotonergic pathways in food intake control in quails and also show, for the first time, hypnogenic action induced by serotonin and a hyperdipsic effect elicited by hydroxytryptophan.

5-Hydroxytryptophan↗
PubMed1992

The prediction and control of behavior revisited: a review of the matching law.

Experimental research conducted over the past 3 decades in relation to behavioral allocation and choice, collectively known as matching law research, is analyzed in this paper. The importance of the matching law for areas ranging from experimental to clinical psychology and psychiatry is discussed in relation to empirical findings that bear upon the validity and utility of the matching law for both the prediction and control of human behavior as well as for psychological and scientific inquiry in general.

Animals↗
PubMed1979

Contingency-shaped and rule-governed behavior: instructional control of human loss avoidance.

Instructions can override the influence of programmed schedules of reinforcement. Although this finding has been interpreted as a limitation of reinforcement schedule control in humans, an alternative approach considers instructional control, itself, as a phenomenon determined by subjects' reinforcement histories. This approach was supported in a series of experiments that studied instructional and schedule control when instructions either did or did not accord with the schedule of reinforcement. Experiment I demonstrated that accurate instructions control discriminative performances on multiple avoidance schedules, and that such control persists in a novel discrimination. Experiments II and III showed that elimination of instruction-following occurs when inaccurate instructions cause subjects to contact a monetary loss contingency. Experiment IV demonstrated the reinforcing properties of accurate instructions. Skinner's view of rule-governed behavior is consistent with these findings, and can be extended to account for many aspects of instructional control of human operant behavior.

Journal Article↗