The effect of the two feet-in-the-door technique on tobacco deprivation

The ‘Foot-in-the-door’ (FITD) is a well-known compliance technique that increases compliance with a request. Many investigations on this paradigm have generally used prosocial requests to test the effect of the technique. A new evaluation of the effect of the FITD technique was carried out on tobacco deprivation. A two feet-in-the-door technique in which the target request was preceded by two small target requests was used to encourage students to stop smoking for 24 h. The results were compared with two single foot-in-the- door procedures in which the final request was only preceded by one small request, as well as with a control condition using only a 24 h stop-smoking request. Results showed that the single FITD and the two feet-in-the-door procedures were effective to increase verbal compliance (accepting to stop smoking) but only the two feet-in-the-door technique significantly increased behavioural compliance (not smoking for 24 h) with the request.     

Distributional reaction time properties in the Eriksen task: marked differences or hidden similarities with the Simon task?

In conflict tasks, the irrelevant stimulus attribute needs to be suppressed for the correct response to be produced. In the Simon task, earlier researchers have proposed that this suppression is the reason that, after an initial increase, the interference effect decreases for longer RTs, as reflected by late, negative-going delta plots. This view has been challenged by observations of positive-going delta plots, even for long RTs, in other conflict tasks, despite a similar necessity for suppression. For late negative-going delta plots to be interpreted as reflecting suppression, a necessary, although maybe not sufficient, condition is that similar patterns should be observed for other conflict tasks. We reasoned that a similar suppression could be present, but hidden, in the Eriksen flanker task. By recording and analyzing electromyograms of the muscles involved in response execution, we could compute delta plots separately for trials that elicited a subthreshold incorrect response activation (partial error). Late negative-going delta plots were observable on partial-error trials, although they were weaker than for the Simon task, reducing the impact of this inversion on the overall distribution. We further showed that this pattern is modulated by time pressure. Those results indicate that mechanisms leading to negative-going delta plots, similar to those observed in the Simon task, are also at play in the Eriksen task. The link between negative-going delta plots and executive online control is discussed.     

Tool use in neurodegenerative diseases: Planning or technical reasoning?

Recent works showed that tool use can be impaired in stroke patients because of either planning or technical reasoning deficits, but these two hypotheses have not yet been compared in the field of neurodegenerative diseases. The aim of this study was to address the relationships between real tool use, mechanical problem‐solving, and planning skills in patients with Alzheimer's disease (AD, n = 32), semantic dementia (SD, n = 16), and corticobasal syndrome (CBS, n = 9). Patients were asked to select and use ten common tools, to solve three mechanical problems, and to complete the Tower of London test. Motor function and episodic memory were controlled using the Purdue Pegboard Test and the BEC96 questionnaire, respectively. A data‐transformation method was applied to avoid ceiling effects, and single‐case analysis was performed based on raw scores and completion time. All groups demonstrated either impaired or slowed tool use. Planning deficits were found only in the AD group. Mechanical problem‐solving deficits were observed only in the AD and CBS groups. Performance in the Tower of London test was the best predictor of tool use skills in the AD group, suggesting these patients had general rather than mechanical problem‐solving deficits. Episodic memory seemed to play little role in performance. Motor dysfunction tended to be associated with tool use skills in CBS patients, while tool use disorders are interpreted as a consequence of the semantic loss in SD in line with previous works. These findings may encourage caregivers to set up disease‐centred interventions.     

A procedure for the incremental construction of a knowledge space

Knowledge spaces are structures for the efficient assessment of the knowledge state of a student in a given field of knowledge. Existing procedures for constructing a knowledge space by querying an expert assume that the domain of questions is known in advance, and that it is fixed during the whole query process. The outcome of these procedures is a knowledge space on the questions in that domain. If the original domain is extended with new questions, a new knowledge space on the extended domain can be produced by expert query. Since in this case a knowledge space for the original domain already exists, the available information can be used to extend the existing space in an efficient way, thus avoiding to apply expert query from scratch. Existing procedures do not provide an explicit way to use such information. Although these procedures can be adapted to this purpose, in this paper a new query algorithm that is specifically tailored for the problem above mentioned is presented.     

To Watch is to Work: a Review of NeuroImaging Data on Tool Use Observation Network

Neuropsychology Review - Since the discovery of mirror neurons in the 1990s, many neuroimaging studies have tackled the issue of action observation with the aim of unravelling a putative homolog...     

Children acquire the later‐greater principle after the cardinal principle

Many have proposed that the acquisition of the cardinal principle (CP) is a result of the discovery of the numerical significance of the order of the number words in the count list. However, this need not be the case. Indeed, the CP does not state anything about the numerical significance of the order of the number words. It only states that the last word of a correct count denotes the numerosity of the counted set. Here, we test whether the acquisition of the CP involves the discovery of the later‐greater principle – that is, that the order of the number words corresponds to the relative size of the numerosities they denote. Specifically, we tested knowledge of verbal numerical comparisons (e.g., Is ‘ten’ more than ‘six’?) in children who had recently learned the CP. We find that these children can compare number words between ‘six’ and ‘ten’ only if they have mapped them onto non‐verbal representations of numerosity. We suggest that this means that the acquisition of the CP does not involve the discovery of the correspondence between the order of the number words and the relative size of the numerosities they denote.     

Association between adolescent rough-and-tumble play and conduct problems,substance use,and risk-taking behaviors: Findings from a school-based sample

Rough-and-tumble play (RTP), also known as play fighting, is a common form of play frequently reported and studied by researchers. However, one important limitation of past research in the area of RTP has been the neglect of the adolescence period. Consequently, little is known about the function of adolescent RTP as well as about clinical characteristics of youth who engage in this activity after childhood. In a school-based sample of 1,771 middle school students (ages 9–16 years), the current study sought to address this gap by examining, via bivariate and multivariate logistic regression analyses, the potential cross-sectional associations of adolescent RTP with (a) selected demographic variables, (b) conduct problem symptoms, (c) substance use, and (d) risk-taking behaviors, including adjustment for several demographic confounders. Results indicated that adolescents reporting higher rates of conduct problem symptoms were more likely to report a recent participation in RTP. In addition, substance use (experimentation and current consumption of tobacco, alcohol, and marijuana) and risk behaviors assessed all were strongly associated with an increased likelihood of reporting an engagement in RTP. This finding suggests that participation in this activity probably implicates particular phenotypic characteristics including the propensity to engage in health-damaging behaviors. But the most profound issue raised by this research concerns the strong relationship between RTP and great levels of conduct disorder symptoms, suggesting a possible significant change in the functional significance of RTP in the adolescence period.