Reinforcing self-help group activities of welfare recipients

The attendance rates of welfare recipients at self-help group meetings was compared when supplementary reinforcement was given for attending and when it was not. Reinforcers included donated items, such as clothing and household goods, and information about welfare services. It was found that the attendance at meetings averaged three recipients per meeting without reinforcement and 15 recipients per meeting with reinforcement. There was evidence that attendance was associated with participation in other self-help activities. It was concluded that practical forms of reinforcement can be found to maintain the participation of severely disadvantaged populations in self-help groups.     

Perceptual grouping in visual word recognition

Four experiments are presented in which printed texts are read for their meaning. Some of the texts were mutilated by altering the size of selected letters. In Experiments 1, 2, and 3, the number of words mutilated per passage and the number of letters changed per word were both manipulated. In all three experiments, reading was slowed as a function of the number of words changed per passage, while the number of letters changed per word had a much smaller effect. The interaction between the number of words and number of letters changed was not significant in any of the experiments. It is difficult to explain these results merely in terms of changes in the discriminability of letters. In Experiment 2 all uppercase text was used, which argues against an explanation in terms of supraletter features such as word envelope. We propose an explanation in terms of visual attention and the perceptual grouping required prior to feature recognition. The last experiment supports this explanation through the counterintuitive finding that adding letters of intermediate size can improve legibility by allowing grouping processes to associate large and small letters as belonging to the same word object.     

The consultation process with an adult: a child analyst's perspective

A close examination of a consultation is presented. Such a face-to-face encounter with an adult patient can suggest a parallel with another type of treatment: child analysis. It is argued that certain ways of working with children in analysis--the gliding between the interpersonal and the intrapsychic--were especially useful in bringing this adult patient to engage in analysis. Also highlighted in this account are interventions that function not as interpretations per se but as protointerpretations aimed at arousing preconscious affect states for the purpose of bringing them into conscious experience.     

Social comparison and social identity: Some prospects for intergroup behaviour

Recent studies have reported that the variable of social categorization per se is sufficient for intergroup discrimination. This paper presents an explanation of these findings in terms of the operation of social comparison processes between groups based on the need for a positive ingroup identity. The relationship between perceived social identity and intergroup comparison is elaborated theoretically, and it is argued that social comparisons give rise to processes of mutual differentiation between groups which can be analyzed as a form of ‘social’ competition. Social competition is distinguished from realistic competition (conflict of group interests). New data is reported which strengthens this interpretation of the ‘minimal’ categorization studies. It is found that minimal intergroup discrimination takes place in the distribution of meaningless ‘points’ as well as monetary rewards and that social categorization per se does not lead to intergroup behaviour where the subjects can act directly in terms of ‘self’. Other studies on intergroup biases are reviewed to argue for the generality of social competition in intergroup situations.     

Training of fast tapping with reduction of kinaesthetic, tactile, visual and auditory sensations

Five subjects were trained to tap on a light Morse-key during nerve compression block. The training sessions lasted for 40 sec., with a 5 sec. rest after the first 20 sec. work period. The group learning curve reached 89.5 per cent. level of normal performance by the eighth training session. In the ninth, the testing session, subjects tapped with visual and auditory sense reduction superimposed on the kinaesthetic and tactile impariment of the training condition. Performance in the testing session reached 40.9 per cent. of normal.

The sixth subject was trained in the same task as the other five subjects, but the training condition included elimination of cues from all four sensory channels. He reached 79.09 per cent. of his normal tapping performance in the seventh session.

These results show that the motor skill of tapping can be relearned in the absence of kinaesthetic cues. Furthermore when the subject has no conscious knowledge of any peripheral sensory cues connected with the ongoing motor activity, learning can nevertheless take place. These findings lead to the hypothesis, that skilled motor activity can be monitored by central processes alone.

During the training sessions subjects showed a tendency of tapping in groups of gradually increasing length. It is hypothesized that increased number of taps forming a group gives an indication to the possible mode of action of these central processes.     

The glucocorticoid contribution to obesity

Obesity is fast becoming the scourge of our time. It is one of the biggest causes of death and disease in the industrialized world, and affects as many as 32% of adults and 17% of children in the USA, considered one of the world's fattest nations. It can also cost countries billions of dollars per annum in direct and indirect care, latest estimates putting the USA bill for obesity-related costs at $147 billion in 2008. It is becoming clear that the pathophysiology of obesity is vastly more complicated than the simple equation of energy in minus energy out. A combination of genetics, sex, perinatal environment and life-style factors can influence diet and energy metabolism. In this regard, psychological stress can have significant long-term impact upon the propensity to gain and maintain weight. In this review, we will discuss the ability of psychological stress and ultimately glucocorticoids (GCs) to alter appetite regulation and metabolism. We will specifically focus on (i) GC regulation of appetite and adiposity, (ii) the apparent sexual dimorphism in stress effects on obesity and (iii) the ability of early life stress to programme obesity in the long term.     

A developmental approach to the study of shape processing

Young children show deficits in shape recognition under piecemeal presentation (i.e., sequential, aperture-viewing) conditions for forms that they can recognize accurately under free-viewing conditions. Two factors that differentiate between these two situations are: (1) S can look at each view more than once in the free-viewing but not in the previously used aperture-viewing situations, and (2) the amount of the shape visible per view may not have been the Ss' preferred unit for processing. The experiment reported here uses Ss, aged 4.7–10.7 years, to explore the relative contributions of these factors. Both increasing the number of “looks” per view and the amount of shape available per view increased the number of correct recognitions at all ages. It seems likely that both of these factors are often involved in accurate shape processing.     

Twist within a somersault

The twisting somersault is a key skill in diving and gymnastics. The components of twist and somersault are defined with respect to anatomical axes, and combinations of multiples of half rotations of twist and somersault define specific twisting somersault skills. To achieve a twisting somersault skill twist must be continuous; otherwise oscillations in twist while somersaulting may be observed. The posture-dependent inertial properties of the athlete and the initial conditions determine if continuous or oscillating twist is observed. The paper derives equations for the amount of somersault required per half twist, or per twist oscillation, without making assumptions about the relative magnitudes of the moments of inertia. From these equations the skills achievable may be determined. The error associated with the common assumption that the medial and transverse principal moments of inertia are equal is explored. It is concluded that the error grows as the number of twists per somersault decreases, when the medial and transverse moments of inertia diverge, and when the longitudinal moment of inertia approaches either the medial or transverse moment of inertia. Inertial property data for an example athlete are used to illustrate the various rotational states that can occur.     

Conditioning the cardiorespiratory dynamics of locomotion in dogs

In 17 dogs blood pressure in the carotid artery, heart rate, pneumogram and actogram of the hind leg were recorded during rest and during locomotion on a treadmill. The increases in cardiorespiratory dynamics which occurred during locomotion were then conditioned. The conditional stimulus was represented by the noise and vibration of the treadmill. It was determined that conditional changes in cardiorespiratory dynamics can be formed quickly on the basis of locomotion. Qualitatively the changes were the same as the unconditional changes, and their magnitude was 60 to 70 per cent that of the unconditional changes. Conditional increase in cardiorespiratory dynamics was most intensive in the first 30 seconds from the onset of the conditional stimulus. In acute extinction of these conditional changes, movements of the extremities were inhibited first, followed by inhibition of increased blood pressure, then inhibition of increased heart rate, and last, inhibition of increased respiratory rate. In another series of experiments on five dogs cardiorespiratory responses were conditioned to a sudden change from moderate locomotion (50 m per min) to rapid locomotion (200 m per min). Increased cardiorespiratory dynamics could be conditioned easily. Increased circulation of blood and increased respiratory rate on exposure to conditional stimuli signalling muscular exertion can be considered an important preparation of the organism for actual muscular activity. This preparation also takes place in natural life conditions.     

Two plus blue equals green: Grapheme-color synesthesia allows cognitive access to numerical information via color

In grapheme-color synesthesia, graphemes (e.g., numbers or letters) evoke color experiences. It is generally reported that the opposite is not true: colors will not generate experiences of graphemes or their associated information. However, recent research has provided evidence that colors can implicitly elicit symbolic representations of associated graphemes. Here, we examine if these representations can be cognitively accessed. Using a mathematical verification task replacing graphemes with color patches, we find that synesthetes can verify such problems with colors as accurately as with graphemes. Doing so, however, takes time: ～250 ms per color. Moreover, we find minimal reaction time switch-costs for switching between computing with graphemes and colors. This demonstrates that given specific task demands, synesthetes can cognitively access numerical information elicited by physical colors, and they do so as accurately as with graphemes. We discuss these results in the context of possible cognitive strategies used to access the information.     

The couch as icon

The couch has always been an integral part of psychoanalytic practice. It has even become a cultural icon representing psychoanalysis itself. However, minimal evidence exists in the psychoanalytic literature that using the couch is necessary or even necessarily helpful to establish a psychoanalytic process and conduct an analysis. Furthermore, it can potentially be harmful to patients such as those who have experienced early loss and trauma or who have significant ego organizational problems. Therefore, the use of the couch per se does not seem well suited as a defining criterion of psychoanalysis. To the extent that it may be clinically valuable, the use of the couch should be more carefully considered and critically examined.     

Exploring the bio-psycho-social

The United Kingdom Council for Psychotherapy (UKCP) was formed to provide a professional body for all psychotherapists in the UK. It maintains a register of trained practitioners who abide by the ethical standards ratified by UKCP, which includes psychotherapists working in all the modalities recognized by UKCP irrespective of their primary professional training. In the absence of statutory registration, there is no fully representative list of UK psychotherapists, but the UKCP register is probably the nearest thing to it. The UKCP board recognized that a survey of registrants would provide a snapshot of the state of UK psychotherapy, which would be valuable in understanding the contribution of psychotherapists to health services in the UK.

A questionnaire was designed, and sent out to all 4005 practitioners registered by UKCP in December 1997. One thousand three hundred and thirty-one questionnaires were returned, a response rate of 34 per cent. The respondents were representative of all registered psychotherapists in 1998 in those characteristics that are published in the paper register, or that can be inferred from it. The respondents were aged 51 years on average, predominantly white (97 per cent described themselves this way) women (69 per cent) practising in London and the South East of England (55 per cent). All the respondents described themselves as being influenced by psychotherapeutic approaches rooted in psycho-analysis. Ninety-five per cent of respondents had another profession previous to psychotherapy. This was most commonly teaching (27 per cent), social work (22 per cent) or counselling (21 per cent). Only 11 per cent of respondents were psychologists.

The contribution of UKCP registrants to the National Health Service has never previously been estimated. A breakdown of the diaries provided by respondents in this survey suggests that UKCP registrants may contribute as many as 44,760 hours of psychotherapy per week to the British National Health Service and other health sectors. Assuming that a whole-time-equivalent psychotherapist works 37 hours per week, this means that UKCP registrants may provide the equivalent work to health service organizations, both public and private, of more than 1,311 full-time psychotherapists.     

Serum anticonvulsant levels in therapy-resistant epileptics

The continuous occurrence of particularly severe epileptic attacks represent a great stress for the patients. For this reason, we have conducted anticonvulsant blood-level studies particularly in these patients, this paper being based on 146 first determinations. Among the patients, most of whom are adults and are treated with combinations of drugs, only 24 per cent reached the assumed normal phenytoin range while 69 per cent remained below it. With the administration of phenobarbital, however, 50 per cent reached the therapeutic range and only 14 per cent reached the lower limiting value. It is only i the last-mentioned group that we assumed primarily an insufficient intake of the drugs while with DPH the problems of the determination of the plasma water range had to be discussed. In practice, blood level determinations have their special value for the detection of the intake of a wrong dosage of the drugs as well as bland anticonvulsant intoxications.     

Studies in olfactory acuity. II.: Relative detectability of n-aliphatic alcohols by the rat

The ability of albino and black rats to detect n-aliphatic alcohols in the vapour phase has been investigated and probit analysis used to evaluate the results. At median threshold (= 50 per cent, success level) detectability tends to increase by logarithmic increments as the number of carbon atoms in the molecule is increased. However, a similar but reverse relationship occurs between carbon chain length and the gradient of the probit regression lines; and detectability at the 85 per cent. success level, as estimated by interpolation, shows a trend towards oscillation. It is suggested that this finding can resolve the apparent conflict in the literature concerning the pattern of odour intensity in homologous series, and that it may reflect the influence of low water solubility in limiting response to high concentrations of longer chain alcohols.

When expressed as pressures, median threshold values for alcohols in the rat vary directly with saturated vapour pressures; when expressed as thermodynamic activities intermediate and longer chain alcohols appear to be equally stimulating, whilst short chain alcohols show decreasing activities as the series is ascended. In several of the relations considered the position of methanol and dodecanol appears anomalous.     

Population density and pathology: Is there a relationship?

The relationship between population density and pathology is assessed in New York City. Although there are substantial simple correlations between density and various pathologies, controlling for income and ethnicity causes all relationships to disappear except for a slight correlation between density and psychiatric terminations. It is concluded that density, measured as people per acre and persons per room, has little or no independent effect on pathology.     

Consistency in interpretation of probabilistic phrases

It is occasionally claimed in both applied decision analysis and in basic research that people can better use and understand probabilistic opinions expressed by nonnumerical phrases, such as “unlikely” or “probably,” than by numbers. It is important for practical and theoretical reasons to evaluate this claim. The available literature indicates that there is large variability in the mapping of phrases to numbers, but provides no indication as to its cause. This study asks (a) whether the variability can be attributed to how people interpret the phrases per se, rather than to how they use the number scale and (b) whether the variability is due primarily to between-subject or to within-subject factors. In order to answer these questions, 32 subjects ranked and compared 19 probability phrases on each of three occasions. The results show that individuals have a relatively stable rank ordering of the phrases over time, but that different individuals have different rank orderings. Practical and methodological implications of these data are discussed.     

Inhibiting doping in sports: deterrence is necessary,but not sufficient

The use of performance-enhancing drugs is a significant problem in sport. It cheats clean athletes of their hard-earned rewards from perfecting their skills though dedication and hard work. It defrauds fans by substituting a distorted playing field for a true competition. Anti-doping agencies have been charged with enforcing drug policies, primarily through the use of drug testing programs. We propose that drug testing, while important, is not sufficient to achieve deterrence. Engaging the principles of perceptual deterrence and development of a moral community of athletes can greatly enhance compliance with rules.     

Logical learning theory: A teleological alternative in the field of personality

Logical learning theory (LLT) is presented as a teleological alternative to most current explanations of human behavior An organism construed as intentional is more suitable to many personality/personological accounts than is an organism construed as mechanical It is first established that LLT is a predicational rather than a mechanical explanation of behavior The concept of telosponsivity is then presented as an alternative to the predominant view of behavior as a supposed response to antecedent stimulation Telosponsivity rests on the assumption of dialectical human cognition A review of the early work on affective assessments in human cognition follows Affection is a special case of telosponsivity, and not a physical feeling or emotion per se Evidence drawn from empirical research outside of the strict LLT literature is also adduced in support of its tenets The presentation closes with a survey of current research being conducted on LLT It IS concluded that human agency is a viable theoretical outlook, and that a view resting on such assumptions can be shown to have empirical validity     

Effort expenditure during proportionally reinforced responding

A bar-pressing experiment was carried out in which laboratory rats were reinforced approximately in direct proportion to the level of time integral of force (“effort”) exerted per response. Over the course of training, the subjects increased in efficiency, as measured by amount of food obtained per unit effort exerted. It was not demonstrated, however, that the animals learned to take advantage of the effort-proportional reinforcement contingency.     

A SIMPLIFIED TIME-SERIES ANALYSIS FOR EVALUATING TREATMENT INTERVENTIONS

Time-series analysis procedures for analyzing behavioral data are receiving increasing support. However, several authorities strongly recommend using at least 50–100 points per experimental phase. A complex mathematical model must then be empirically developed using computer programs to extract serial dependency from the data before the effects of treatment interventions can be evaluated. The present discussion provides a simple method of evaluating intervention effects that can be used with as few as 8 points per experimental phase. The calculations are easy enough to do by hand.