Although interest development is often conceptualized as a process that occurs within an individual, interest can be developed through various social mechanisms. Messages that suggest that one is or is not welcome within a context may serve to bolster or attenuate interest in those contexts. In a sample of first semester freshmen undergraduate science students, we tested whether or not talking with close others about one’s interests, and receiving social recognition during those conversations, was related to having a greater science career interest over time. Our findings suggest that the way in which students perceive others’ reactions to their scientific interests (social recognition) during these conversations may have the greatest impact on students that face greater external barriers to persisting. We found that positive social recognition appraisals that convey that a listener understands and encourages one’s interest in science predicted a greater science career interest over time for women, but not men. The impact of positive social recognition appraisals on interest in a science career was greatest among women with relatively low or average science identities, but not for women with a relatively high science identity. The implications for the development of students’ interest and for broadening participation in science are discussed.
A common form of missing data is caused by selection on an observed variable (e.g., Z). If the selection variable was measured and is available, the data are regarded as missing at random (MAR). Selection biases correlation, reliability, and effect size estimates when these estimates are computed on listwise deleted (LD) data sets. On the other hand, maximum likelihood (ML) estimates are generally unbiased and outperform LD in most situations, at least when the data are MAR. The exception is when we estimate the partial correlation. In this situation, LD estimates are unbiased when the cause of missingness is partialled out. In other words, there is no advantage of ML estimates over LD estimates in this situation. We demonstrate that under a MAR condition, even ML estimates may become biased, depending on how partial correlations are computed. Finally, we conclude with recommendations about how future researchers might estimate partial correlations even when the cause of missingness is unknown and, perhaps, unknowable. 相似文献
Five experiments examined how practice early in skill acquisition affected variability and accuracy during skill retention (Experiments 1-5) and skill transfer (Experiments 3, 4, 5). Lag constraints required that each path from apex to base of a computer-generated pyramid display differ from some number (the lag) of immediately prior paths. Location constraints specified end points at which paths must exit the pyramid. In all experiments, an early optimal period for acquiring a variability level was identified. Both low and high levels of variability were sustained during retention; high levels facilitated transfer. The results suggest that (a) early practice that requires high variability sensitizes learners to changes in condition and (b) such perception-performance links facilitate transfer by activating appropriate alternative strategies/schema or initiating their construction. 相似文献
The current study investigates two recently identified threats to the construct validity of behavioral inhibition as a core
deficit of attention-deficit/hyperactivity disorder (ADHD) based on the stop-signal task: calculation of mean reaction time
from go-trials presented adjacent to intermittent stop-trials, and non-reporting of the stop-signal delay metric. Children
with ADHD (n = 12) and typically developing (TD) children (n = 11) were administered the standard stop-signal task and three variant stop-signal conditions. These included a no-tone
condition administered without the presentation of an auditory tone; an ignore-tone condition that presented a neutral (i.e.,
not associated with stopping) auditory tone; and a second ignore-tone condition that presented a neutral auditory tone after
the tone had been previously paired with stopping. Children with ADHD exhibited significantly slower and more variable reaction
times to go-stimuli, and slower stop-signal reaction times relative to TD controls. Stop-signal delay was not significantly
different between groups, and both groups’ go-trial reaction times slowed following meaningful tones. Collectively, these
findings corroborate recent meta-analyses and indicate that previous findings of stop-signal performance deficits in ADHD
reflect slower and more variable responding to visually presented stimuli and concurrent processing of a second stimulus,
rather than deficits of motor behavioral inhibition. 相似文献
The authors examined how an applicant's handshake influences hiring recommendations formed during the employment interview. A sample of 98 undergraduate students provided personality measures and participated in mock interviews during which the students received ratings of employment suitability. Five trained raters independently evaluated the quality of the handshake for each participant. Quality of handshake was related to interviewer hiring recommendations. Path analysis supported the handshake as mediating the effect of applicant extraversion on interviewer hiring recommendations, even after controlling for differences in candidate physical appearance and dress. Although women received lower ratings for the handshake, they did not on average receive lower assessments of employment suitability. Exploratory analysis suggested that the relationship between a firm handshake and interview ratings may be stronger for women than for men. (PsycINFO Database Record (c) 2008 APA, all rights reserved). 相似文献
The ethics expressed in Kierkegaard’s Works of Love has been subject to persistent criticism for its perceived indifference to concrete persons and failure to attend to the other in their individual specificity. Recent defenses of Works of Love have focused in large part on the role of vision in the text, showing the supposed “blind” empty formalism of the emphasis on the category of “the neighbor” to serve a normative model of seeing the other correctly. However, when this problem is viewed in the broader context of Kierkegaard’s phenomenology of moral vision, two further, thus far unanswered, problems emerge: How can we see the other and the moral demand they represent at the same time, and how can we see the other and our own condition at the same time? This paper draws on other Kierkegaardian texts to show how Kierkegaard’s model of moral vision allows for the simultaneity in vision necessary to overcome these challenges. 相似文献
In this paper I do two things: (1) I support the claim that there is still some confusion about just what the Quine-Putnam
indispensability argument is and the way it employs Quinean meta-ontology and (2) I try to dispel some of this confusion by presenting the argument in
a way which reveals its important meta-ontological features, and include these features explicitly as premises. As a means
to these ends, I compare Peter van Inwagen’s argument for the existence of properties with Putnam’s presentation of the indispensability
argument. Van Inwagen’s argument is a classic exercise in Quinean meta-ontology and yet he claims – despite his argument’s
conspicuous similarities to the Quine-Putnam argument – that his own has a substantially different form. I argue, however,
that there is no such difference between these two arguments even at a very high level of specificity; I show that there is
a detailed generic indispensability argument that captures the single form of both. The arguments are identical in every way
except for the kind of objects they argue for – an irrelevant difference for my purposes. Furthermore, Putnam’s and van Inwagen’s
presentations make an assumption that is often mistakenly taken to be an important feature of the Quine-Putnam argument. Yet
this assumption is only the implicit backdrop against which the argument is typically presented. This last point is brought
into sharper relief by the fact that van Inwagen’s list of the four nominalistic responses to his argument is too short. His
list is missing an important – and historically popular – fifth option.