The effects of instructional set on physiological response to stressful imagery

Centrally mediated or cognitive variables have received considerable attention in clinical research. With the establishment of the effectiveness of such specific treatment techniques as systematic desensitization (Paul. 1969a. 1969b). a question arises as to the influence of cognitions on process and outcome variables in such learning based treatments (Lang. 1971). Research investigating the influence of demand characteristics and subject expectancies has demonstrated such centrally mediated variables can significantly influence overt, behavioral and self-report measures of fear, stress, or anxiety (cf. Borkovec. 1972: Marcia. Rubin and Efran. 1969; McGlynn. Maelia and Nawas. 1969: McGlynn. Reynolds and Linder. 1971: Oliveau. Agras. Leitenberg and Wright. 1969; Rappaport. 1972: Rosen. 1974).However. Borkovec (1972) and Rappaport (1972) failed to obtain expectancy effects on physiological measures of anxiety. Neither investigation provided for an independent assessment of subjects' actual expectancies, or belief in the instructions, as recommended by Davison and Wilson (1973). Borkovec administered clinical procedures over four sessions and varied the information communicated about the ‘purpose’ of the treatments (physiological versus therapeutic instructions). Differential rationales for differential expectancies of physiological reactivity were not provided. After each session, subjects reviewed the same false physiological records depicting reductions in fear responses. Although these changes were explained either physiologically or therapeutically. the fact that such reductions were emphasized should have attenuated differences between groups. Rappaport (1972) exposed subjects to a fearful stimulus and varied the suggestion and rationale for the pseudotreatment: no expectancy (stress research): therapeutic expectancy (fear reduction); and negative expectancy (fear increase). The lack of an independent assessment of the expectancy manipulation, as well as the exclusion of a specific therapeutic procedure, make it impossible to interpret the results in relation to expectancy effects on physiological fear responses during the administration of therapeutic procedures. There is other evidence, however, that suggestion and instructional set can significantly influence somatic and autonomic response systems (Barber. 1961. 1965; Sternbach. 1964. 1965).The primary purpose of this study was to evaluate the effects of instructional set on physiological responses to stressful imagery. This was an early step in a research program investigating the effects of instructional and informational variables on physiological responses of clinical interest. One half of the subjects received abbreviated live relaxation training (R) as described m a manual by Bernstein and Borkovec (1972) and based upon the original work of Jacobson (1938). The other half received an inert placebo pill and undertook a target detection task (P). The latter procedure was similar to that used by Paul (1966). Although both procedures had previously been shown to have relaxing effects, the P task was included as an additional control for any potential effects specific to the tension-release procedure of R. In order to evaluate the effects of instructional set, one half of each of the above two groups received instructions designed to lead to an expectancy of response inhibition to stressful imagery by the respective procedure (Decrease Stress Response. DSR). while the other half received instructions designed to lead to an expectancy of an increased response to stressful imagery by the respective procedure (Increase Stress Response. ISR). Each subject visualized three individually specified items that were the most frightening scenes imaginable prior to training and four times after training visualized the scene producing the largest response. Considerable effort was devoted to eliciting from each subject the most frightening items possible for her. and it was clear from subject comments that the items did elicit negative emotional responses.Since previous research (Barber. 1961. 1965; Sternbach. 1964. 1965) indicated that instructional set can influence physiological reactivity, it was hypothesized the DSR) subjects should exhibit a greater reduction in emotional response from pre- to posttraining than ISR subjects.     

Are models necessary?

Modelling is currently one of the most successful and popular ways of dealing with some neurotic problems. It is based on a social learning theory that amongst other virtues takes into account cognitive variables. helps shed light on the aetiology of some neurotic disorders (Rachman. 1972). and seems particularly relevant to the understanding of much child behaviour.The technique of the modelling treatment has been refined over the years, largely through the work of Bandura, and the contention to date has been that behavioural improvement is brought about by vicarious processes (Bandura, 1969). However, since a modelling procedure by necessity involves exposure to a phobic object it is possible that vicarious processes are in fact redundant and that improvement is affected by ‘straightforward’ extinction processes. In short the contention is that interaction with a model disguises the fact that the modelling situation is no more than a modified flooding session. In one of the few studies to test this hypothesis Bandura, Grusec and Menlove (1967) found that exposure alone resulted in some gains for dog-phobic children, but that these changes were neither as great nor as stable as those achieved by similar children in a modelling treatment. Other indirect evidence for this hypothesis can be found by-relating the amount of exposure to the phobic object to outcome in modelling studies. Despite obvious difficulties in cross-trial comparison, rate of success for longer exposure treatments would constitute some support, albeit very tentative, for this hypothesis. Unfortunately, few of the studies contained enough reliable information on the relevant variables to reveal much. Bandura et al. (1967) used 80 min of exposure in all, with success rates of 70%, whilst less exposure time resulted in worse outcome in studies by Spiegler et al. (1969) and Ritter (1969). However, against this, Hill et al. (1968) and Rimm and Mahoney (1969) both report good results with brief participant modelling. The fact that participant modelling seems to be more beneficial than symbolic modelling, may be regarded as some support for the exposure hypothesis, since presumably exposure in these cases is more intense.However, these studies are largely indirect and one test of the hypothesis requires a comparison between groups one of which is exposed to both phobic object and model interaction (symbolic modelling) and one of which is exposed just to the phobic object.     

Simulating Personal Wealth in the Laboratory

During laboratory gambling tasks participants are not typically allowed to wager their personal wealth. Instead, wealth is simulated by telling participants they have been endowed with game tokens that will be later exchanged for money. Past research indicates that participants undervalue game tokens following this procedure, which leads to elevated risk taking compared to procedures that add saliency or realism to the monetary payoff. A between-subjects experiment tested whether showing a picture of money during the endowment instructions and repeating token-money exchange information during the session influenced participants' preference for risky and riskless options. The results showed no effect of the money picture. However, repeated token-money exchange information significantly decreased risk taking. Together with past studies, this finding suggests that endowment procedures might establish greater value in game tokens, and therefore better simulate personal wealth, when the eventual exchange between game tokens and money is made more salient to participants.     

Flooding therapy: Effectiveness,stimulus characteristics,and the value of brief in vivo exposure

Three analogue experiments examined flooding therapy. Experiment 1 showed that flooding was more effective than standardized desensitization in reducing snake phobia. Experiment 2 examined three different modes of presenting the feared stimuli in flooding: taped auditory presentation, pictorial presentation, and a combination of these two. An additional combination group were given a brief in vivo exposure to the feared object immediately after each of three treatment sessions. Both a behavioral test and subjective estimates of fear showed advantages for the combined group that had the in vivo exposure, although it appeared that auditory instructions to imagine interaction with the snake was the best method for presenting the feared stimuli. Experiment 3 compared the auditory imagined method with and without ‘aversive’ or ‘implosive’ scenes, and with either an immediate or a delayed in vivo exposure. The only procedure to produce marked effects was the one that omitted ‘aversive’ scenes and provided immediate post-treatment in vivo exposure.     

Paired-associate learning by normal children and retardates with relevant redundant compound stimuli

During daily sessions four first-grade boys each played a two-choice marble dropping game. When one colored light was presented a plain token was dispensed as soon as S dropped a marble, and when another light was on a token with a hole in its center was delivered. During choice trials that were interspersed among single-color trials S had to choose one of the two different colored holes. At the end of each session S traded tokens with holes for pennies and then turned in the remaining plain tokens which were not exchanged for money. After S had developed a preference for the response that earned the tokens with holes (tokens that were backed up with pennies) E instructed S to try to get as many plain tokens (unexchangeable tokens) as he could. All Ss immediately switched to the response that earned unexchangeable tokens but as soon as E left they returned to choosing the backed up response. When the adult reentered, Ss again chose to work for unexchangeable tokens. Two different Es (male and female) served and the instructions of each were effective in controlling responding as long as the adult was present, except for one S who did not respond to one E, but did respond as described for the other.     

An experimental evaluation of tokens as conditioned reinforcers in retarded children

Since the publication of experimental reports by Wolfe (1936) and Cowles (1937), that tokens could be established as conditioned reinforcers, many accounts have appeared on the implementation of token systems in human subjects. Tokens have been successfully used as prosthetic motivational devices in a great variety of situations and subjects, such as retarded children (Birnbrauer, Wolf, Kidder and Tague, 1965), adult psychotics (Ayllon and Azrin, 1969), delinquent children and adolescents (Tyler, 1967; Phillips and Wolf, 1968), low achievers in schools (Clark, Lachowicz and Wolf, 1968), emotionally disturbed children (Hewett, Taylor and Artuso, 1969) and in normal classroom settings (O'Leary, Becker, Evans and Saudargas, 1969). In these reports, administration of tokens usually produced an increase in the frequency of desirable social and productive behavior. However, none of these studies showed that the effect of the tokens depended on their role as conditioned reinforcers based on the standard exchange systems being used. No assessment was provided about the separate contribution of the social reinforcement operations involved in dispensing tokens in a social setting.A suggestion about the possible confounding effects of social reinforcement in token administration comes from the failure to establish token systems in subjects who are partially unresponsive to social reinforcement (Hamblin et al., 1970; Ribes and Souza e Silva, in preparation). The present research was conducted with the aim of isolating the effects of conditioned reinforcement as such—apart from those produced by the social reinforcement provided in the delivery of tokens.     

金钱刺激和决策者角色对个体道德决策的影响——基于过程分离范式

以大学生为被试,采用3（金钱刺激：无金钱刺激、金钱奖励、金钱惩罚）×2（决策者角色：决策者、旁观者）的被试间实验设计,利用过程分离范式分别计算被试道德决策中的功利主义倾向和道义论倾向,从而探讨金钱刺激和决策者角色对个体道德决策的影响。结果发现：（1）无论是决策者还是旁观者,金钱刺激都不会影响其道义论倾向;（2）决策者的道义论倾向大于旁观者;（3）只在有金钱奖励时决策者的功利主义倾向才大于旁观者。     

Social control by adult preference in operant conditioning with children

During daily sessions four institutionalized retardates and four normal, first-grade children each played a two-choice marble dropping game while an adult experimenter sat beside and watched. When one of two colored lights was presented, two tokens were dispensed as soon as the subject dropped a marble, and when the other light was on, one token was dispensed. During choice trials that were interspersed among single-colored trials the subject was required to choose one of the two different colored holes. After the subject developed a preference for the color that earned two tokens, the experimenter stated a preference for the response that earned only one token (i.e., “I like it better when you put it into the —colored hole.”) Six of the eight subjects immediately switched to the response that earned low magnitude reinforcement when the experimenter stated his preference. Only two subjects switched back to the response that earned high magnitude reinforcement when the experimenter left the room. Subjects complied with the experimenter's preference statement regardless of whether or not it also included a negative component (i.e., what the experimenter did not like). There were no systematic differences between mentally retarded and normal subjects.     

Tokens for stuttering

Four young stutterers were observed during 10 weekly sessions. Each session was divided into pretreatment, treatment, and posttreatment segments. Redeemable tokens were administered contingent upon stuttering behaviors in the treatment segment of the Experimental condition. In a Parallel Control condition, no tokens were administered during the entire session. The differences between the pretreatment and treatment segments were compared for the two conditions. Three subjects had dramatically fewer stuttering behaviors when tokens were being administered, while the fourth had more stuttering under the same condition. The subject whose stuttering increased had a history of therapy in which voluntary, “faked” stuttering had been called for, and the behaviors that increased were judged to be of this type. The decreases were interpreted as suggesting that the contingent tokens acted to countercondition the aversiveness of the stuttering experience, which reduced the anticipation of stuttering and hence the stuttering itself. The increase was felt to be simple reinforcement. The counterconditioning interpretation was borne out in two clinical applications in which money was presented contingent on stuttering behaviors judged to be aversive to the stutterer, and in which dramatically sudden, but long-lasting, improvement was seen.     

Experimental manipulations to reduce the negative effects of money

People generally consider money a necessary evil because it invokes dual effects. On one hand, it increases people's productivity and performance, but it also decreases people's sensitivity to others. I conducted three experimental studies with an attempt to reduce the negative effects of money. Results indicated that when money was framed as a social incentive, its negative effect was attenuated and people exerted more helping behavior in both hypothetical and real‐life scenarios. However, when a social incentive was framed in monetary terms, the negative effect of money prevailed in hypothetical but not in real‐life scenarios. Results suggested that money itself is not the root of evil or good, but rather its effects are influenced by our perceptions of its role.     

Reinforced practice and reduction of different kinds of fears in adults and children

The purpose of this study was to determine whether or not fears with different origins, course and chronicity could be reduced by a common treatment program. A number of therapeutic procedures that had been experimentally demonstrated to be individually important in prior behavior modification studies with neurotic disorders were combined into a single therapeutic program called ‘reinforced practice.’ The combined elements were: graduated and repeated practice in approaching actual phobic stimuli: reinforcement for gains in performance; feedback of measurable progress; and instructions designed to arouse expectations of gradual success. In each of four experiments involving four different fears, namely fear of heights, snakes and electric shock in adults, and fear of darkness in young children, Ss who expeienced the ‘reinforced practice’ procedure improved their performance by a significant and substantial margin as compared to untreated control Ss. These results suggest that regardless of different etiologies, regardless of whether or not the fears are ‘rational’ or ‘irrational,’ and regardless of whether or not the fears are transitory or long lasting, the same treatment procedure can be equally effective in reducing escape-avoidance behavior.     

Play desensitization of fear of darkness in preschool children.

Systematic desensitization therapy (SDT) is considered to be a technique of established effectiveness in reducing monosymptomatic fears (Paul, 1969a, 1969b), yet little systematic research has been done to investigate the merit of desensitization procedures in modifying children's behavior. The few available controlled studies (Miller et al., 1972; Obler and Terwilliger, 1970; Oliver, 1971) on desensitization with children have produced equivocal results. Although imagery and relaxation have been reported of benefit when used separately (Graziano and Kean, 1971; Lazarus and Abramovitz, 1962), evidence suggests that the usual combination of imagery and relaxation is not effective in reducing children's fears (Miller et al., 1972). Investigators in this area have often modified traditional SDT to include alternatives to imagery such as pictures, drawings, play (Cassell, 1965; Lazarus, 1960; Obler and Terwilliger, 1970; Patterson, 1965), or in vivo exposure to the feared stimulus (Obler and Terwilliger, 1970). Relaxation has often been replaced with other responses thought to be incompatible with anxiety such as eating (Jones, 1924). Another deviation from traditional SDT has been the delivery of positive reinforcement (food, praise, or toys) contingent upon the child's approaching the feared object (Obler and Terwilliger, 1970; Patterson, 1965). On the basis of such varied techniques, it is impossible to determine which of these procedures constitutes an effective treatment method for children. In the following study, three desensitization procedures involving graded exposure to the feared stimulus (darkness) through symbolic play, were compared to no-treatment and placebo control groups under differing instructional sets. Treatments were designed to determine the therapeutic efficacy of play as a method of stimulus presentation with children, and to determine whether reciprocal inhibition, extinction, operant reinforcement, or instructional set contribute to fear reduction in desensitization with children.     

Cognitive performance,monetary incentive,and aggression

Individuals with impaired cognitive abilities associated with frontal lobe function have recently been shown to manifest increased aggression. This study investigated the effect of contingent money to inhibit aggression in these individuals. One hundred and forty males, aged 18–40, were ranked according to their performance on the Spatial Conditional Associative-Learning task. Forty-eight males (24 with scores in each of the upper and lower performance quartiles) participated in the full study. Half of the subjects competed in a Taylor aggression task where they received a monetary incentive for choosing lower shocks; the remainder competed without any monetary contingency. Aggression was defined as shock intensity delivered to a sham opponent. Shock intensity significantly increased as a main effect of lower cognitive performance, absence of monetary incentive, and provocation. In addition, provocation interacted significantly with test performance. Finally, individuals in the upper cognitive performance quartile showed significantly greater reductions of unprovoked aggression in response to monetary incentive. The results are discussed in terms of impairments in the ability to associate inhibitory influences in the formulation of behavioral strategies under aggressive conditions. © 1996 Wiley-Liss, Inc.     

Maintaining disulfiram ingestion among outpatient alcoholics: a security-deposit contingency contracting procedure

Disulfiram is frequently prescribed to alcoholic patients as a deterrent to drinking. Although ingestion of ethanol by a disulfiram patient quickly results in an intense dysphonc reaction, the drug is not generally credited with significant value in alcoholism treatment (Mottin, 1973). It is suggested that most alcoholics simply stop taking the medication (Gerrein et al., 1973). and review articles conclude that motivation for abstinence is the crucial variable involved in successful disulfiram treatment (Ditman, 1966: Mottin, 1973).Motivation may be a characteristic of environmental contingencies rather than of individuals. If so, environmental contingencies should permit one to design into a disulfiram treatment progrim the requisite motivation to achieve therapeutic success. Contingency management procedures supporting disulfiram ingestion reported to date (Liebson et al., 1973: Haynes, 1973) have been of the sort to be imposed upon difficult populations rather than offered to general treatment applicants. Contingency contracting may represent a technique for supporting disulfiram ingestion appropriate to the broader general population of voluntary alcoholism treatment applicants. Contingency contract treatment (Homme, 1969; Stuart, 1971) is a procedure in which client and therapist mutually agree to establish an incentive for the client to achieve a behavioral goal. Contingency contracts can be viewed as a form of self-control therapy, and have been applied in a wide variety of problem areas, including school problems (Homme, 1969: Cantrell, et al., 1969). delinquency (Stuart, 1971),weight control (Mann, 1972). smoking reduction (Elliott and Tighe, 1968: Winett, 1973), drug abuse (Boudin, 1972), and alcoholism (Miller, 1972).Frequently contingency contracting involves the client's posting of a financial security deposit to serve as his incentive for achieving the agreed-upon therapeutic goal (Tighe and Elliot, 1968). This security deposit can be earned back consequent upon achieving specific goals, or sacrificed consequent upon failure. Controlled studies by Mann (1972) and by Winett (1973) have demonstrated this security-deposit procedure to be effective in enhancing weight loss and smoking reduction, respectively.We report here on our experience with application of the security deposit contracting procedure to maintaining routine disulfiram ingestion among outpatients in an alcoholism treatment program.     

The contribution of relaxation to symbolic modeling in the modification of dental fears.

Studies of symbolic modeling suggest that it is a technique which is at least as effective and more efficient (faster) than imaginal desensitization in the treatment of fears (Bandura el al., 1969; Woody and Schaible, 1969). Bandura et al. (1969) assessed the contributions of relaxation to the procedure and found less subjective anxiety and greater positive attitude change with relaxation but no significant differences in oven behavior nor in generalized anxiety reduction. In this study the ‘symbolic modeling only’ subjects received their treatment after they and the other subjects had received the original post-testing assessment. The present experiment was an attempt to assess the contributions of deep muscle relaxation to symbolic modeling without such confounding and with a more nearly clinical population. Dental fear represents a ‘near clinical’ phobia which satisfies Bernstein and Paul's (1971) criteria for analogue desensitization research. That is. dental phobics exhibit a strong, costly and distressing avoidance response which increases in strength as a function of exposure despite high demand.     

Recalling courage: An initial test of a brief writing intervention to activate a ‘courageous mindset’ and courageous behavior

ABSTRACT

Though theoretical models propose that courage can be ‘activated,’ little experimental work exists to support this idea. The current study examines a writing intervention that asks individuals to reflect on experiences in which they faced their fears (thus demonstrating courage) to determine if such reflection would promote more approach-oriented cognition (Study 1) and behavioral intentions (Study 2). As expected, when asked to decide if they could/would engage in various approach behaviors related to their fear, participants in the courage condition chose ‘yes’ more often and were comparatively faster to choose ‘yes’ and slower to choose ‘no.’ Furthermore, participants in the courage condition demonstrated greater intentions of approach behavior toward feared situations in the laboratory. These results, though small in effect, suggest that the writing intervention can activate a ‘courageous mindset’ and can promote more courageous behavioral intentions.     

Synchronous and desynchronous changes during fear reduction.

The purpose of this experiment, carried out on 27 subjects with intense and circumscribed fears, was to test one main hypothesis and several subsidiary predictions. The prediction that a high-demand in vivo treatment condition produces desynchronous changes and a low-demand treatment condition synchronous changes, was supported by some inter-session findings but not by the intra-session findings. The clear linear relation between heart-rate and reported fear was confirmed, as was the rapid habituation of the heart-rate response to phobic stimulation.The fear-reactions and fear-reductions of psychiatric and non-psychiatric were indistinguishable. High heart-rate responders and low heart-rate responders showed similar patterns of improvement. The constrained laboratory ‘treatment’ procedure used in the experiment produced large and rapid reductions in fear.     

金钱激励在社会排斥影响不确定性决策中的调节作用

研究从金钱补偿的视角考察社会排斥对不确定性决策的影响以及金钱激励的调节作用。实验发现,有金钱激励时,被排斥者在爱荷华赌博任务(Iowa gambling task,IGT)中的行为分数(组块2和3的选牌净分数和总的盈利分数)显著高于社会接纳者,表现为风险规避; 在无金钱激励时,被排斥者在IGT任务中的行为分数(组块4和5的选牌净分数和总的盈利分数)显著低于被接纳者,表现为风险寻求。实验结果表明社会排斥对不确定性决策的影响受到金钱激励的调制。     

Renewal of fear and avoidance in humans to escalating threat: Implications for translational research on anxiety disorders

Exposure-based treatment for threat avoidance in anxiety disorders often results in fear renewal. However, little is known about renewal of avoidance. This multimodal laboratory-based treatment study used an ABA renewal design and an approach–avoidance (AP–AV) task to examine renewal of fear/threat and avoidance in twenty adults. In Context A, 9 visual cues paired with increases in probabilistic money loss (escalating threats) produced increases in ratings of feeling threatened and loss expectancies and skin-conductance responses (SCR). During the AP–AV task, a monetary reinforcer was available concurrently with threats. Approach produced the reinforcer or probabilistic loss, while avoidance prevented loss and forfeited reinforcement. Escalating threat produced increasing avoidance and ratings. In Context B with Pavlovian extinction, threats signaled no money loss and SCR declined. During the AP–AV task, avoidance and ratings also declined. In a return to Context A with Pavlovian threat extinction in effect during the AP–AV task, renewal was observed. Escalating threat was associated with increasing ratings and avoidance in most participants. SCR did not show renewal. These are the first translational findings to highlight renewal of avoidance in humans. Further research should identify individual difference variables and altered neural mechanisms that may confer increased risk of avoidance renewal.     

Lifeboat politics in the Pacific: Affect and the ripples and shimmers of a migrant saturated future

Affect is explored in relation to the governance of irregular migrants and asylum seekers that turn such vulnerable individuals into a feared category. How are emotions as practices developed, fostered and enacted? The examples developed in the article focus on ‘illegal maritime arrivals’ (asylum seekers arriving by boat) and the emotionally charged response to them in Australia. The article argues that the state, far from embodying a detached and neutral arbiter utilising various steering mechanisms of care and due process, instead governs through fear and anxiety generated in relation to outsiders. The state draws on, and indeed creates, dispositions and feelings, generating a distinct politics of affect. The motif of the lifeboat is an example of a diversion from the anxieties and fears in everyday life; a metaphor for scarcity and a battle for survival. The asylum seeker as ‘illegal maritime arrival’ (boat person) is the exemplar of such a lifeboat politics in the Australian case.