The non-occurrence of a stimulus as a signal

Two groups of rats were rewarded for pressing a panel following a varying number of bar presses; a signal following the bar press indicated whether or not a panel press would be rewarded if made before the next bar press. For one group the signal indicating reward was a flash of light, for the other it was the non-occurrence of the flash (in the latter case the flash thus signalled non-reward). The first group learned to withold panel presses except when reward was signalled, but the second group did not. This result is related to the “feature positive effect” of Jenkins and Sainsbury (1970), in which pigeons failed to withold pecks at a negative stimulus display when it was the same as the positive display except for the addition of a distinctive feature.     

Memory as resistance, and the telling of a dream.

Traditional analytic orientation to memory as subject to repression has overshadowed examination of some of the ego's other activities bearing on memory. The author examines the defensive use of memory with the analytic goal of maximum autonomous access for the patient to the ego's previously unconscious management of intrapsychic conflict. A close scrutiny of an example of this in the form of the telling of a dream explores this resistance process and illustrates a technical approach. Some aspects of this perspective are considered in relation to traditional approaches to dream material. Certain technical priorities for differing clinical settings are discussed.     

Numerosity estimation as a function of stimulus organization.

It was proposed that stimulus organization of a set of homogeneous items can best be measured by using the mean distance to nearest neighbours. Patterns of dots were generated that fell on four different positions along the cluster continuum, from highly regular, through random, to clustered. When thirty subjects were asked to judge numerosity, their estimates decreased significantly as cluster measures increased. Four possible interpretations of the effect of organization on numerosity perception are discussed.     

The countertransference dream1

Can the analyst's night‐dream about his patient be considered as a manifestation of countertransference‐and, if so, under what conditions? In what way can such a dream represent more than just the disguised fulfillment of a repressed wish of the analyst? Is there not a risk of the analyst unconsciously taking up and ‘using’ the content of a session or other elements coming from the analytic situation for his own psychic reasons? The author, closely following Freud's dream theory, shows the mechanisms which can allow us to use the dream content in the analytical situation: preserved from the secondary processes of conscious thinking, other fantasies and affects than in the waking state can emerge in dream thought, following an ‘unconscious perception’. After examining the countertransference elements of Freud's dream, ‘Irma's injection’, which leads off The interpretation of dreams, the author presents a dream of her own about a patient and its value for understanding affects and representations which had hitherto remained unrepresented.     

The dream of dreams

Abstract

This paper investigates the relationship between the therapist's use of the dream and the patient's use of the dream, both inside and outside the formal therapeutic setting.     

The stimulus suffix effect as a memory coding phenomenon

Two short-term memory experiments examined the nature of the stimulus suffix effect on auditory linguistic and nonlinguistic stimulus lists. In Experiment 1, where subjects recalled eight-item digit lists, it was found that a silently articulated digit suffix had the same effect on recall for the last list item as a spoken digit suffix. In Experiment 2, subjects recalled lists of sounds made by inanimate objects either by listing the names of the objects or by ordering a set of drawings of the objects. Auditory suffixes, either another object sound or the spoken name of an object, produced a suffix effect under both recall conditions, but a visually presented picture also produced a suffix effect when subjects recalled using pictures. The results were most adequately explained by a levels-of-processing memory coding hypothesis.     

The common mirror dream, dreamer, and the dream mirror

From the widely diverse category of so-called mirror dreams, we have differentiated the most frequent, which we have designated the common mirror dream (CMD). It is one in which the dreamer at some point looks into a mirror and reports seeing himself, a part of himself or a distorted though recognizable version of himself. Mirror dreams, including CMDs, are distinctly uncommon. Every dreamer of CMDs in our series had felt enjoined by the mother (in most cases with the father's collusion) not to see and regard her clearly and not to be an accurately reflecting mirror for her. The intensity with which the maternal injunction against accurate visual perception and evaluation was feared was an important distinguishing feature in our patients with CMDs. The essence of the CMD has been hypothesized to be a reciprocal, reverberating, visual-exhibitionistic dyad representative of the mother-child relationship. The dream mirror may represent the wish that the analyst-mother counter a feared parental injunction against accurate visual perception and evaluation so as to correct the distorted perceptions of self and objects and provide visual affirmation of the value and integrity of the self-representation. For some patients, defense against the dangers of castration and loss of maternal love was accomplished by the mirror mechanisms of magically transforming images in the mirror, the ease of creating illusion in the mirror, and a fetishistic mechanism of visually reintrojecting a phallic symbol from the mirror. Our data failed to confirm many of the hypotheses of previous contributors as to specific symbolic meanings of the dream mirror. More relevant than the symbolism of the dream mirror are the many functions of the dream mirror for the dreamer. These are analyzed and discussed.     

Wind as an aversive stimulus

Two monkeys were trained on an escape-avoidance procedure in which a lever press delayed exposure to wind by 20 sec. For 5 hr, subjects alternately worked 15 min and rested 15 min, and performed this schedule when the wind was 5, 10, and 20 mph and the temperatures were 50, 60, and 70° F. Analysis of variance showed that the percent of wind avoided was related to both the velocity of the wind and the temperature during the exposure. When the wind was 10 and 20 mph it was avoided almost continuously regardless of the temperature.     

Airflow as a discriminative stimulus

In one experiment, pigeons were taught to discriminate airflow by having availability of reinforcement signalled by its presence and extinction signalled by its absence. After they reached criterion, some were trained on a discrimination reversal. Others were trained on an intradimensional discrimination with a low airflow velocity associated with reinforcement and a higher airflow velocity associated with extinction. All discriminations were learned rapidly, indicating that airflow velocity can function as a discriminative stimulus. In the second and third experiments, naive pigeons were trained to discriminate the presence of a compound stimulus (one of three tonal intensities paired with one of three airflow velocities) from its absence. These pigeons were subsequently given a component stimulus test during extinction on four stimulus values; the two training values, the tone alone, and the airflow alone. High or moderate velocity airflow controlled more responding than any of the three tone intensities. However, low velocity airflow controlled more responding only when a low intensity tone was employed.