家庭社会经济地位与学习投入的关系：学业自我 效能的中介作用

采用家庭社会经济地位、学业自我效能与学习投入量表,调查了953名初中生,运用结构方程模型探讨了家庭社会经济地位、学业自我效能与学习投入之间的关系。在控制学生性别、年级,以及先前学习成绩的影响后,结果发现:(1)家庭社会经济地位越高,学生对学习的投入就越多;(2)学业自我效能在家庭社会经济地位与学习投入之间起完全中介作用;(3)在家庭社会经济地位的组成成分与学习投入的关系中,家庭收入可以显著预测学习投入,而父母亲职业、父母亲教育水平对学习投入均无直接预测作用,它们是通过家庭收入的中介作用,再经过学业自我效能而影响学习投入。     

马克思主义方法论的四大基本命题辨析

Marxist methodology is the direct reflection of Marxist world outlook.Marxist methodology and its basic principles are inseparable.Everything starts from reality,analyze specific circumstances,history and logic are consistent,and combine theory and practice are four basic propositions of Marxist methodology.They are all the expressions of Marxist world outlook and methodology,but with different characteristics.However,there are several specious even habitual fallacies which need to be discriminated,analyzed...     

Antagonism of lateral amygdala alpha1-adrenergic receptors facilitates fear conditioning and long-term potentiation

Norepinephrine receptors have been studied in emotion, memory, and attention. However, the role of alpha1-adrenergic receptors in fear conditioning, a major model of emotional learning, is poorly understood. We examined the effect of terazosin, an alpha1-adrenergic receptor antagonist, on cued fear conditioning. Systemic or intra-lateral amygdala terazosin delivered before conditioning enhanced short- and long-term memory. Terazosin delivered after conditioning did not affect consolidation. In vitro, terazosin impaired lateral amygdala inhibitory postsynaptic currents leading to facilitation of excitatory postsynaptic currents and long-term potentiation. Since alpha1 blockers are prescribed for hypertension and post-traumatic stress disorder, these results may have important clinical implications.Although norepinephrine (NE) has been widely studied as an important modulator of memory and emotion, comparatively little is known about the role of NE in amygdala-dependent Pavlovian fear conditioning, a major model for understanding the neural basis of fear learning and memory. In fear conditioning, an emotionally neutral conditioned stimulus (CS; i.e., tone) is temporally paired with an aversive unconditioned stimulus (US; i.e., footshock). After very few pairings, a lasting, robust CS–US association is acquired, and the CS elicits stereotypical defensive responses, including behavioral freezing (Blanchard and Blanchard 1969; Bolles and Fanselow 1980).The lateral nucleus of the amygdala (LA) is a key structure underlying fear conditioning (LeDoux 2000). Convergence of CS and US information in LA is believed to play an important role in initiating synaptic plasticity. Long-term potentiation (LTP)-like changes in LA CS processing are critical for fear memory storage (LeDoux 2000; Blair et al. 2001; Maren 2001; Walker and Davis 2002). LA receives auditory CS inputs from the thalamus and cortex and connects directly and indirectly with the central nucleus of the amygdala to control expression of Pavlovian fear responses.Of the noradrenergic receptor subtypes, alpha1 receptors have received the least attention in fear conditioning. LA receives NE-containing inputs from the locus coeruleus that fire tonically and phasically in response to aversive stimuli like footshock (Pitkänen 2000; Tanaka et al. 2000; Aston-Jones and Cohen 2005). Alpha1-adrenergic receptors are expressed in LA, most likely on both excitatory and inhibitory neurons (Jones et al. 1985; Domyancic and Morilak 1997). Alpha1 receptor activation stimulates GABA-mediated miniature inhibitory postsynaptic currents in LA (Braga et al. 2004), suggesting that alpha1 receptors contribute to inhibition in fear conditioning pathways. Several elegant experiments recently demonstrated that LA inhibition gates synaptic plasticity necessary for fear conditioning, and this inhibitory gate can be influenced by neuromodulators including NE (Stutzmann and LeDoux 1999; Shumyatsky et al. 2002; Bissière et al. 2003; Shaban et al. 2006; Shin et al. 2006; Tully et al. 2007). However, the role of alpha1 receptor activity in gating amygdala LTP and fear learning has never been examined.We hypothesized that alpha1 blockers would facilitate fear learning, possibly by impairing LA inhibition and facilitating LA LTP. To test this hypothesis, we injected rats with terazosin, a selective alpha1-adrenergic receptor antagonist, systemically or directly into LA before or after fear conditioning. We examined in vitro the effect of terazosin on LA pyramidal cell inhibitory postsynaptic currents (IPSCs) and excitatory postsynaptic currents (EPSCs) in response to fiber stimulation of the thalamic CS input pathway to LA, as well as the effect of terazosin on LA LTP in this same pathway. We found that intra-LA terazosin facilitated fear conditioning when injected before but not after training. We also found that terazosin impaired IPSCs in LA pyramidal cells, leading to facilitated EPSCs and LTP.Behavioral experiments were conducted on adult, male Sprague–Dawley rats (Hilltop Laboratory Animals) weighing approximately 300 g upon arrival. Rats were individually housed, maintained on a 12/12 h light/dark schedule, and allowed free access to food and water. Testing was conducted during the light phase. All procedures and experiments were approved by NYU''s Animal Care and Use Committee.For systemic injections, terazosin (20 mg/kg; Sigma) was dissolved in saline and injected intraperitoneally (i.p.) 30 min prior to conditioning in 1 mL/kg volume. For bilateral infusions, terazosin (125 ng/0.25 µL) was dissolved in aCSF and infused into the LA at 0.1 µL/min 30 min prior to or immediately after fear conditioning. Bilateral guide cannulae (22 gauge; Plastics One) aimed at LA (−3.3 mm anterior, 5.2 mm lateral, −7 mm dorsal to bregma) were surgically implanted as previously described (Sotres-Bayon et al. 2009). Rats were given at least 7 d to recover from surgery before testing. For infusions, dummy cannulae were removed, and infusion cannulae (28 gauge, +1 mm beyond guides) were inserted into guides. Infusion cannulae were connected to a 1.0 μL Hamilton syringe via polyethylene tubing. Infusion rate was controlled by a pump (PHD22/2000; Harvard Apparatus), and infusion cannulae were left in place for an additional 60 sec to allow diffusion of the solution away from the cannula tip, then dummy cannulae were replaced. Upon completion of the experiment, rats were euthanized, brains removed, and cannulae placements verified histologically as previously described (Sotres-Bayon et al. 2009).Two contexts (A and B) were used for all testing as previously described (Schiller et al. 2008). The grid floors in Context B were covered with black Plexiglas inserts to reduce generalization. No odors were used and chambers were cleaned between sessions. CSs were 30 sec, 5 kHz, 80 dB tones, and USs were 1 sec, 0.8 mA scrambled electric footshocks. Experiments consisted of two phases separated by 48 h: (1) fear conditioning in Context A and (2) long-term memory (LTM) test in Context B. On Day 1, rats were placed in Context A, allowed 5 min to acclimate, and then received three CS–US pairings separated by variable 5 min ITIs. On Day 3, rats were placed in Context B and allowed 5 min to acclimate before receiving one CS-alone presentation.The index of fear in behavioral experiments was “freezing,” the absence of all non-respiratory movement (Blanchard and Blanchard 1971; Fanselow 1980). Following testing, freezing was manually scored from DVDs by a scorer blind to group specification. Graphs represent group means ± SEM. Statistical analysis was conducted with GraphPad Prism.Whole-cell electrophysiological recordings were obtained from LA pyramidal cells using in vitro coronal slices from rats aged P21–P30 d as described in Cunha et al. (2010). Terazosin was bath-applied for 10 min to achieve stable responses before testing. The cells were voltage-clamped using an Axopatch 200B amplifier at −35 mV for recording EPSCs and IPSCs. Synaptic responses were evoked with sharpened tungsten bipolar stimulating electrodes. Internal capsule fibers containing thalamic afferents were stimulated for paired-pulse facilitation (PPF) (ISI = 50 msec; 0.1 Hz) using a photoelectric stimulus isolation unit with a constant current output. Cells were rejected if access resistance (8–26 MΩ) changed more than 15%. Signals were filtered at 2 kHz and digitized (Digidata 1440 A; Axon Instruments), and peak amplitude, 10%–90% rise time, and IPSC decay time constants were analyzed offline using pCLAMP10.2 software (Axon Instruments).Brain slices for LTP experiments were prepared from rats aged 3–5 wk as in Johnson et al. (2008) and maintained on an interface chamber at 31°C. Glass recording electrodes (filled with aCSF, 5 MΩ resistance) were guided to LA neurons. Bipolar stainless steel stimulating electrodes (75 kΩ) were positioned medial to LA in internal capsule fibers. Orthodromic synaptic potentials were evoked via an isolated current generator (Digitimer; 100 μsec pulses of 0.3–0.7 mA). Evoked field potentials were recorded with an Axoclamp 2B amplifier and Axon WCP software (Axon Instruments). Data were analyzed offline using WCP PeakFit (Axon Instruments). LTP was measured as a change in evoked field potential amplitude.Baseline responses were monitored at 0.05 Hz for 30 min with a stimulus intensity of 40%–50% of maximum fEPSP before LTP induction. Terazosin (10 µM) was superfused for 15 min, and then LTP was elicited by three tetanus trains (100 Hz × 1 sec, 3 min ITI) with the same intensity and pulse duration as the baseline stimuli. In one experiment, picrotoxin (PTX; 75 µM) was present in the perfusion solution to block fast GABAergic signaling.     

婚姻压力与婚姻质量:婚姻承诺和夫妻支持的调节作用

选取北京389对夫妻,采用婚姻压力、婚姻质量、婚姻承诺和夫妻支持问卷,探讨了婚姻压力和婚姻质量、婚姻承诺和夫妻支持的现状,以及承诺和支持在压力对婚姻质量影响中的调节效应。结果发现:(1)丈夫的婚姻质量、婚姻承诺及提供信息支持的水平显著高于妻子。(2)婚姻压力显著负向预测夫妻各自的婚姻质量,但只有妻子感知的婚姻压力能显著负向预测丈夫的婚姻质量。(3)婚姻承诺和夫妻支持的调节作用存在性别差异,即自身和配偶的承诺和支持水平,只能在妻子的婚姻压力对自身婚姻质量的预测中起到调节作用,而丈夫身上并未发现这一效应。     

The importance of gender and affect in the socialization of adolescents' beliefs about benevolent authority: Evidence from Chinese indigenous psychology

Belief in the benevolence and moral legitimacy of leaders in central government is theorized as a form of cultural capital consistent with the hierarchical relationalism of East Asian societies with Confucian roots. A reliable measure of benevolent authority beliefs (BAB) is introduced, and its convergent and discriminant validity relative to established measures of institutional trust are established. Its socialization as part of the political culture of Taiwan was examined among high school adolescents aged 13–16. Significant gender differences were found inconsistent with traditional patriarchy. Regression analyses showed that within the relationship with mothers but not fathers, adolescents associated higher reciprocal filial piety, authoritative parenting, and authentic (positive) affect with higher BAB. For daughters but not sons, reciprocal filial piety, authoritative parenting style, and authentic (positive) affect in the relationship with their father were positively associated with BAB. Affect‐based transfer from parent‐child relationships rather than authoritarian obligations based on rote learning was a key socializing factor in a contemporary Chinese society.     

在家庭自由游戏和智力任务游戏中儿童与母亲的交往行为特征

本研究采用家庭录像观察的方法,考察了61名3－4岁儿童在家庭环境中的两个情境－－自由和带有智力任务倾向的拼图游戏情境中所表现出来的行为特征,结果发现：1儿童在两种游戏情境中与母亲交往时所表现出来的行为特征可以从独立性、顺从、言语交流和参与四个维度进行评价。2当儿童的游戏从自由游戏转为带有智力任务倾向的游戏时,儿童与母亲的交往行为方式发生明显变化,交流行为和积极情绪明显减少,而依赖行为和不与母亲交流的行为显著增加。3在上述两种游戏情境中,儿童与母亲的交往行为表现出个别差异,在自由游戏情境中,42.6%为独立型、32.8%为顺从型和24.6%为交流型;在拼图游戏情境中,54％为独立型、23％为顺从型和23％不顺从型。     

研究生职业价值观的定量比较研究

用修订后的中文super职业价值观量表为工具对377名在读硕士研究生的职业价值观进行调查,研究结果表明：1．在研究生职业价值观中影响最大的因素为进取心、经济价值和工作关系。2．研究生对15种职业价值尺度最重视的前4位依次为生活方式、成就、独立性、同事关系,而对监督关系、变动性、安全性、管理最不重视。研究生的职业价值观在不同年级、性别、工作经历、婚姻状况、学科间重视顺序一致性程度很高,但在一些价值尺度上也表现出了团体差异和个别差异。     

大学生作弊的研究现状与展望：心理学的视角

大学生作弊问题正备受关注,因为这与大学之崇高社会地位和历史使命相悖,且危害教育公平、降低高等教育公信力。本文就国外心理学领域对该问题研究取得的丰硕成果,从大学生作弊流行率、影响因素、防范措施以及有关理论方面进行了回顾和分析,进而就关于作弊的分类及类型、性质和模型解释诸重要问题做了探讨并提出了看法。     

The development of preschool children's (Homo sapiens) uses of objects and their role in peer group centrality

The ways in which objects were used by preschool children (Homo sapiens) was examined by directly observing them across one school year. In the first objective we documented the relative occurrence of different forms of object use and their developmental growth curves. Second, we examined the role of different types of object use, as well as novel and varied uses of objects, in predicting peer group centrality. Results indicated that noninstrumental object play was the most frequently observed category, followed by tool use, exploration, and construction; sex moderated the growth curve of children's exploration. Noninstrumental object play, not other types of object use, was significantly related to novel and varied object uses and only the latter category predicted peer group centrality. Results are discussed in terms of the social transmission of novel object use.     

Type of items and the magnitude of gender differences on the Mental Rotations Test.

The present study considered the structure of the drawings used in the Mental Rotations Test (MRT) to examine whether distractors that are either a mirror image or structurally different from the target as well as response alternatives with occluded and nonoccluded parts affect the magnitude of gender differences on this test. One hundred and three women and 100 men undergraduate students were given unlimited time to complete the MRT. A gender by occlusion interaction on correct responses showed that gender differences were larger for occluded than for nonoccluded items. Examination of performance as a function of item placement in the test suggested that it is unlikely that the results could be accounted for by differential practice effects in women and men. Implications of these results for explanations of gender differences on the MRT and for the training of spatial abilities are discussed.