RESUMO
Rats work very hard for intracranial self-stimulation (ICSS) and tradeoff effort or time allocation for intensity and frequency parameters producing a sigmoidal function of the subjective reward magnitude of ICSS. Previous studies using electrical intracranial stimuli (ICS) as a discriminative cue focused on estimating detection thresholds or on the discrimination between intensities. To our knowledge, there is no direct comparison of the reinforcer tradeoff functions with the discriminative functions. Rats were trained to press and hold the lever for ICSS using the maximum reinforcing intensity below motor alterations or avoidance behavior. First, rats were trained to hold the lever for 1 s; after stability, they undergo trials where intensity or frequency was decreased on 0.1 log step. Thereafter, they undergo further training with a hold of 2 and later of 4 s to determine tradeoff with intensity or frequency. The same rats were trained on a discrimination task where the previously used ICSS signaled a lever where a 1 s hold response was followed by a reinforcing ICSS; on randomly alternating trials, a -0.6 log ICS signaled an alternate lever where a similar hold response led to a reinforcer. After mastering discrimination, generalization tests were carried out with varying intensity or frequency. Rats completed training with 2 and later 4 s hold response. After the completion of each task, the rats had different doses of a pimozide challenge while their intensity and hold-down requirement were varied. With regards to the rats' tradeoff response time allocation as a function of intensity or frequency, sigmoid functions were displaced to the right when long responses were required. Rats that learned the discrimination task attained a discrimination index of 90-98%. Discrimination accuracy decreased slightly with the increase of hold requirement, but generalization gradients were not displaced to the right as a function of the response requirement. Pimozide induced a dose-dependent displacement of the time-allocation gradients, but it did not affect the generalization gradients. It is concluded that rats integrate response requirements as part of the reinforcement tradeoff function, but the response cost is not integrated into the discriminative function of ICSS.
RESUMO
Based on a novel survey for Argentina, this paper provides evidence of the changes in time allocation within couples during the COVID-19 emergency. The survey was conducted online during the period of national lockdown in 2020 and collected information on hours allocated to paid work, housework, child care, educational childcare and leisure by both members of the couple before and during the lockdown, as well as socio-demographic characteristics. Our sample consists of 961 couples of which 785 have children. Our results indicate that during the lockdown, despite a reduction in time assigned to paid work and an increase in time spent in unpaid activities for both members of the couple, gender gaps regarding the latter increased. Specifically, while the load of men and women's work for pay became more equitable, women took up a larger proportion of the additional housework and childcare. We found that some factors mitigated (whether the man reduced his hours of work or whether both partners kept on doing so) while others potentiated (whether the woman reduced her hours of work, whether she continued working from home, or whether the couple outsourced housework before lockdown) the changes in the within-couple gender gaps in unpaid activities.
RESUMO
Abstract This study aims to measure the time allocated to child raising using parents' self-assessment and the criterion of subjective time sufficiency or insufficiency. We surveyed 545 Russian parents from the Ural region and used factor analysis to identify the main determinants that affect the self-assessment of time allocated to parenting. We found that parents in the Russian Ural region believe they do not spend enough time with their children. Reasons for the insufficient amount of time allocated to parenting are the following: overload of labor duties at home and at work, psychological causes of intergenerational interaction, external reasons − studies, poor health, the need to care for other relatives and so on.
Resumo Este estudo tenta medir o tempo alocado aos filhos por meio da autoavaliação dos pais e do critério de suficiência subjetiva ou tempo insuficiente. Foram pesquisados 545 pais russos da região dos Urais e utilizou-se a análise fatorial para identificar os principais determinantes que afetam a autoavaliação do tempo alocado pelos pais. Verificou-se que os pais nas regiões russas dos Urais têm uma opinião comum de que não passam tempo suficiente com seus filhos. As razões para o tempo insuficiente alocado à educação dos filhos são as seguintes: sobrecarga de tarefas em casa e no trabalho; causas psicológicas de interação intergeracional; e razões externas, como estudo, saúde precária e necessidade de cuidar de outros parentes.
Resumen Este estudio intenta medir el tiempo asignado a los niños por medio de la autoevaluación de los padres y del criterio de suficiencia subjetiva o de insuficiencia de tiempo. Se encuestaron 545 padres rusos de la región de los Urales y se usó el análisis factorial para identificar los principales determinantes que afectan la autoevaluación del tiempo asignado a la crianza de los hijos. Descubrimos que en las regiones rusas los padres tienen la opinión común de que no pasan suficiente tiempo con sus hijos. Las razones para la cantidad insuficiente de tiempo asignado a la crianza de los hijos son la sobrecarga de deberes laborales en el hogar y en el trabajo, causas psicológicas de la interacción intergeneracional, o razones externas como estudio, mala salud o necesidad de cuidar a otros familiares.
Assuntos
Humanos , Família , Educação Infantil , Carga de Trabalho , Federação Russa , Relações Pais-Filho , Admissão e Escalonamento de Pessoal , Educação , Causas ExternasRESUMO
Does integration into commercial markets lead people to work longer hours? Does this mean that people in more subsistence-oriented societies work less compared to those in more market-integrated societies? Despite their venerable status in both anthropology and economic history, these questions have been difficult to address due to a dearth of appropriate data. Here, we tackle the issue by combining high-quality time allocation datasets from 8 small-scale populations around the world (45,019 observations of 863 adults) with similar aggregate data from 14 industrialized (Organisation for Economic Co-operation and Development) countries. Both within and across societies, we find evidence of a positive correlation between work time and market engagement for men, although not for women. Shifting to fully commercial labor is associated with an increase in men's work from around 45 h per week to 55 h, on average; women's work remains at nearly 55 h per week across the spectrum. These results inform us about the socioeconomic determinants of time allocation across a wider range of human societies.
Assuntos
Comércio , Trabalho , Teorema de Bayes , Brasil , República Democrática do Congo , Feminino , Humanos , Indonésia , Quênia , Masculino , Peru , Análise de Regressão , Fatores de Tempo , VenezuelaRESUMO
This paper seeks to reinterpret current tenets of functional analytic psychotherapy (FAP) using some assumptions of molar behaviorism. In it, a conceptual alternative to the molecular approach is proposed to explain the mechanisms of change of FAP. To achieve this goal, the utility and limitations of using discrete responses and stimuli as units of analysis are discussed. As an alternative, this paper suggests, as proposed by molar behaviorism, using activities as the unit of analysis. The use of activities as the unit of analysis would allow analyses of clinical behavior as choices in different time scales and measurements of clinical behavior using time allocation. Using choice behavior to analyze data allows analyses of behavior in terms of its short-term and long-term value. It is argued that time allocation as a unit of measure is more appropriate than the rate of behavior because it allows the continuous measurement of behavior and comparisons of disparate behaviors as they occur during therapy sessions. Finally, a multi-scale analysis would allow the articulation of long-term and short-term contingencies that are related to therapy and behavioral change.
RESUMO
This paper lays the groundwork for a theory of time allocation across the life course, based on the idea that strength and skill vary as a function of age, and that return rates for different activities vary as a function of the combination of strength and skills involved in performing those tasks. We apply the model to traditional human subsistence patterns. The model predicts that young children engage most heavily in low-strength/low-skill activities, middle-aged adults in high-strength/high-skill activities, and older adults in low-strength/high-skill activities. Tests among Machiguenga and Piro forager-horticulturalists of southeastern Peru show that males and females focus on low-strength/low-skill tasks early in life (domestic tasks and several forms of fishing), switch to higher-strength/higher-skill activities in their twenties and thirties (hunting, fishing, and gardening for males; fishing and gardening for females), and shift focus to high-skill activities late in life (manufacture/repair, food processing).
RESUMO
In this paper we outline the activities of young girls in a Toba community of northern Argentina and examine the effect of girl helpers on time allocation of nursing women. Activity budgets were obtained for 41 girls aged 3 to 15 using spot observations. Girls spent substantial portions of observations engaged in helping behaviors. Individual values varied with age, anthropometric characteristics, and birth order. Activity budgets of 21 nursing women were obtained through focal observation sessions. Women living in households with girls aged 7 to 15 allocated 17% less time to domestic work and 9% more time to socializing during afternoon observation sessions. For nursing women in this community, direct childcare (provided by the infant's own mother) seemed to be a priority. Living with a girl helper did not have any measurable effect on the frequency or duration of nursing, or on the time that women spent caring for their infants. Based on these findings, hypotheses are outlined for future work on the effect of girl helpers on women's fertility.