Choice with delayed and probabilistic reinforcers: effects of variability, time between trials, and conditioned reinforcers.

In a discrete-trials procedure with pigeons, a response on a green key led to a 4-s delay (during which green houselights were lit) and then a reinforcer might or might not be delivered. A response on a red key led to a delay of adjustable duration (during which red houselights were lit) and then a certain reinforcer. The delay was adjusted so as to estimate an indifference point--a duration for which the two alternatives were equally preferred. Once the green key was chosen, a subject had to continue to respond on the green key until a reinforcer was delivered. Each response on the green key, plus the 4-s delay that followed every response, was called one "link" of the green-key schedule. Subjects showed much greater preference for the green key when the number of links before reinforcement was variable (averaging four) than when it was fixed (always exactly four). These findings are consistent with the view that probabilistic reinforcers are analogous to reinforcers delivered after variable delays. When successive links were separated by 4-s or 8-s "interlink intervals" with white houselights, preference for the probabilistic alternative decreased somewhat for 2 subjects but was unaffected for the other 2 subjects. When the interlink intervals had the same green houselights that were present during the 4-s delays, preference for the green key decreased substantially for all subjects. These results provided mixed support for the view that preference for a probabilistic reinforcer is inversely related to the duration of conditioned reinforcers that precede the delivery of food.     

Psychoeducational Interventions for Stress Management and Well-Being

The importance of educating students about stress and stress management is emphasized, because students will confront stressors throughout their life span. In this article the author summarizes major stress theories and shows how stress theory and stress management strategies can be integrated into existing school curricula.     

Distress,wellbeing, and growth amidst COVID-19: Considering the dynamic interplay between positive and negative anticipatory emotions

Although negative anticipatory emotions are typically seen as risk factors for poorer psychological outcomes over COVID-19, emotion theorists suggest that this risk may be attenuated if balanced by the experience of positive emotion. Thus, the current study examined whether interactions between positive and negative anticipatory emotions were concurrently associated with psychological distress and greater personal wellbeing/posttraumatic growth (PTG) at three distinct periods (i.e., pre-lockdown, during lockdown, post-lockdown), and whether associations varied by these three COVID-19 time periods. The study utilizes two large longitudinal Australian samples, surveyed in 2020 prior to, during, and after a strict 4-month lockdown that occurred in Australia. Overall, positive emotions attenuated the adverse psychological outcomes arising from higher levels of negative emotion (i.e., higher psychological distress and lower personal wellbeing). Observed effects varied according to COVID-19 threat exposure. Specifically, the interaction was significantly associated with psychological distress prior to the lockdown for Sample 2, and during the lockdown for both samples. The interaction was significantly associated with wellbeing (Sample 2) prior to, and during, the lockdown but only marginally associated post-lockdown. The interaction, however, was not significantly associated with PTG (Sample 1). The results suggest that it is valuable for future research to consider greater emotional complexity (i.e., mixed emotions) over COVID-19, and other stressors more generally, to encompass a more nuanced understanding of resilience.     

Confidentiality: a survey in a research hospital

Despite the many justifications for protecting patient confidentiality, we recognize that confidentiality cannot be absolute. Our world of automated information and easy access and storage poses many threats to confidentiality. This paper has described a survey conducted at the NIH Clinical Center to assess the knowledge, attitudes, and behaviors of clinical physicians and nurses about confidentiality of patient information. The survey findings demonstrate the need for reminders and increased awareness about confidentiality in our setting. Most of the survey respondents had a good knowledge of what was expected of them, and they believed that confidentiality was important and maintaining it was their responsibility. Of interest was that in several simulated clinical situations, there was a discrepancy between what respondents indicated they should do and what they thought they would do. The biggest discrepancies appeared in situations that involved overhearing a patient conversation on the elevator, approaching an unfamiliar person who is reading a medical record in the nurses' station, and answering a patient's inquiry about the status of another patient. The findings support the speculation that this difference may be attributed to discomfort or decreased awareness, and not necessarily to lack of knowledge. Results indicate that policies and administrative expectations should be frequently communicated and enforced, and that educational programs that address issues of confidentiality should be provided. The results of this survey have been influential in guiding educational strategies and administrative activities at the clinical center. The clinical center initiated a confidentiality awareness campaign, displaying a new poster every three months in strategic locations and distributing other tangible reminders (such as pens, magnets, and buttons) containing the same confidentiality message.(ABSTRACT TRUNCATED AT 250 WORDS)     

Must phenomenology remain Cartesian?

Husserl saw the Cartesian critique of scepticism as one of the eternal merits of Descartes?? philosophy. In doing so, he accepted the legitimacy of the very idea of a universal doubt, and sought to present as an alternative to it a renewed, specifically phenomenological concept of self-evidence, making it possible to obtain an unshakable foundation for the edifice of knowledge. This acceptance of the skeptical problem underlies his entire conceptual framework, both before and after the transcendental turn, and especially the immanence/transcendence distinction, i.e., the very basis of intentionality. In taking as its starting point an analysis of perception, the article puts forth a certain number of phenomenological arguments in order to put into question the validity of the skeptical problem and, therefore, of the Husserlian conceptual framework; it defends, in the first place, a disjunctive conception of perception and, in the second place, a holism of experience.     

Is grammatical gender considered arbitrary or semantically motivated? Evidence from young adult monolinguals,second language learners,and early bilinguals

It is generally assumed that speakers of grammatical gender languages consider grammatical gender arbitrary, but this assumption has never been tested. Research shows that the grammatical gender of nouns can affect perceptions of the masculinity or femininity of the noun's referent in speakers of languages with masculine and feminine noun classes. However, bilingualism facilitates the development of lexical arbitrariness awareness, and could therefore affect awareness of grammatical gender arbitrariness. This study then compared three groups of young adult speakers of a grammatical gender language: monolinguals, early bilinguals, and instructed second language learners. Participants evaluated the gender assignments of 25 nouns of entities (animals, abstract concepts, natural kinds, and artefacts), and answered open and closed questions about grammatical gender. Participants considered grammatical gender as semantically motivated and mostly related gender assignments to perceived masculine or feminine connotations of referents. Knowledge of an additional grammatical gender language was linked to increased awareness of the arbitrariness of first language gender assignments in both early bilinguals and later instructed learners. It is argued that grammatical gender awareness deserves further investigation. Knowing more than one grammatical gender language can increase awareness of grammatical gender arbitrariness. Implications are discussed for language teaching and language reform.     

Recurrence plot analyses suggest a novel reference system involved in newborn spontaneous movements

The movements of newborns have been thoroughly studied in terms of reflexes, muscle synergies, leg coordination, and target-directed arm/hand movements. Since these approaches have concentrated mainly on separate accomplishments, there has remained a clear need for more integrated investigations. Here, we report an inquiry in which we explicitly concentrated on taking such a perspective and, additionally, were guided by the methodological concept of home base behavior, which Ilan Golani developed for studies of exploratory behavior in animals. Methods from nonlinear dynamics, such as symbolic dynamics and recurrence plot analyses of kinematic data received from audiovisual newborn recordings, yielded new insights into the spatial and temporal organization of limb movements. In the framework of home base behavior, our approach uncovered a novel reference system of spontaneous newborn movements.     

Priming Effects on Commitment to Help and on Real Helping Behavior

Years of research on bystander apathy have demonstrated that the physical presence of others can reduce the tendency to help individuals needing assistance. Recent research on the implicit bystander effect has suggested that simply imagining the presence of others can lead to less helping behavior on a subsequent unrelated task. The present study was designed to contribute to previous findings on the implicit bystander effect by demonstrating these effects on commitment to help and on real helping behavior, rather than simply on intentions to help. Studies 1a and 1b demonstrate that merely priming participants with the construct of being in a group at Time 1 created significantly less commitment to future helping on a subsequent task at Time 2. Study 2 aimed to extend this effect to behavioral measures and verified that participants exposed to a group prime helped less than those who were exposed to a single-person prime. The implications of these findings for the literature on the bystander effect are discussed.     

On Impediments to the Process of Individuation

A clinical case is presented at length with a view to understanding how the healthy fear of incest, which favours the process of individuation, may come into conflict with the fear of leaving childhood and becoming adult. Among the consequences of this conflict is a sort of paralysis or impediment to living which may be converted into hate. The inquiry mainly regards anxiety, fear, hate and aggression as factors which conspire in holding an individual back from his path in life. The affects are taken into consideration in accordance with Fromm's theory of aggression and his ''syndrome of decay'' diagnostic scheme, which results from the confluence and interaction of incestuous symbiosis, narcissism and destructiveness. Emphasis is placed on mechanisms of repression and splitting of hate not employed in aggression. Repressed and split hate may sustain para-hallucinatory symptoms and produce terror. This view offers an explanation of the perturbing symptomatology that afflicted the patient presented here and also shows the power of hate as a bond, as concomitant cause of the mother fixation and as obstacle to the process of individuation.