The effects of smoked marijuana on progressive-interval schedule performance in humans.

In three experiments, 8 human subjects participated in a study of the effects of smoked marijuana on progressive-interval schedule performance. A two-component chained progressive-interval fixed-interval schedule of point delivery was used. In the progressive-interval component, the interval length began at 20 s and increased either geometrically or arithmetically (by either 20 s, 40 s, 80 s, 100 s, or 160 s) on each subsequent interval. After this interval elapsed, a single button press produced the fixed-interval component, with a total of five reinforcers of varying magnitude ($0.05, $0.20, or $0.40) available on a fixed-interval 20-s schedule. After the five reinforcer deliveries, the schedule returned to the initial progressive-interval component. Several relationships were found among rates of responding, postreinforcement pauses and drug administration in the progressive-interval component: (a) Postreinforcement pauses increased as the temporal requirements of the progressive-interval schedule increased; (b) rates of responding during successive progressive-interval components rapidly decreased to low rates of responding after the first few progressions; (c) postreinforcement pauses decreased systematically as dose of smoked marijuana increased; and (d) rates of responding increased after smoking active marijuana but not after smoking placebo cigarettes. Results are discussed in the context of behavioral control and relevance to other studies that have investigated the effects of smoked marijuana on schedule performance.     

汉语双字词超音段信息在语义激活中的作用

采用眼动方法,通过两个实验考察了汉语双字词超音段信息在语义激活中的作用。结果显示：（1）汉语双字词语义激活过程中,分别改变首字声调和尾字声调对语义激活起到抑制作用,首字声调改变时的抑制作用更大。结果支持了Cohort模型。（2）语义相关词的注视点和注视时间远远多于其控制词,但没有发现词频效应。（3）汉语声调的加工过程与声韵母一样,独立作用于语义激活过程。     

老年抑郁个体注意偏向的发生阶段

本研究以老年抑郁量表、自评抑郁量表和汉密顿抑郁量表为工具筛选出老年抑郁个体和老年正常对照组为研究对象,通过空间线索化范式,以及分离的情绪Stroop范式考察了刺激呈现时间、线索呈现条件对老年抑郁个体注意偏向的影响,并探讨了老年抑郁个体注意偏向的发生阶段。研究结果表明：（1）在空间线索任务中,当刺激呈现时间为250ms或500ms时,老年抑郁组与老年正常组的返回抑制效应在各种情绪刺激下均无显著差异（P>0.05）,即老年抑郁个体没有呈现出对任何情绪刺激类型的注意偏向现象;当刺激呈现时间为750ms或1000ms时,老年抑郁组的返回抑制效应在不同情绪刺激条件下差异显著,F(2, 66)=3.22,P=0.046,而老年正常组则不存在返回抑制效应在情绪刺激类型上的差异（P>0.05）,提示老年抑郁组对不同情绪类型的刺激注意返回抑制能力不同;进一步检验得知：返回抑制效应在悲伤条件下,存在组间差异,分别是F(1, 33)=10.03,P=0.003;F(1, 33)=18.21,P=0.000,即老年抑郁组的返回抑制效应弱于老年正常组。（2）在Stroop实验中,老年抑郁组在单中性、双中性与单悲伤面孔、中性悲伤面孔、双悲伤面孔线索类型下的反应时差异显著;且当线索类型为单悲伤面孔、中性悲伤面孔、双悲伤面孔时,老年抑郁组与老年正常组的反应时差异均显著,即老年抑郁组的反应时明显长于老年正常组,F(1, 41) = 5.37,P=0.026;F(1, 41) = 7.08,P=0.011;F(1, 41) = 7.28,P=0.010;而当线索类型为单中性和双中性面孔时,老年抑郁组与老年正常组的反应时差异不显著（P>0.05）;提示抑郁组可能在自动化注意选择分配期存在注意偏向。研究认为,老年抑郁个体的注意偏向可能发生在注意初始分配阶段和解释阶段,且受加工深度的影响。在刺激呈现时间较长的条件下,注意偏向的效应更明显。     

父母婚姻问题对子女心理成长的影响及表现——基于箱庭作品特征的视角

基于初始箱庭作品的视角,考察父母婚姻问题对子女心理成长的影响及表现。采用实验组VS对照组研究设计,对两组共60名被试的初始箱庭作品进行数据分析。结果发现：与对照组大学生相比,实验组大学生的箱庭作品在玩具选择类别和数量、箱庭场景和主题、动沙方式和制作时间方面存在显著差异。研究结论：初始箱庭作品能在一定程度上反映实验组被试内心不够丰富、防御性强、自我不够稳定、创伤感比较突出等心理特点。     

(Re)evaluating the Implications of the Autoregressive Latent Trajectory Model Through Likelihood Ratio Tests of Its Initial Conditions

The autoregressive latent trajectory (ALT) model synthesizes the autoregressive model and the latent growth curve model. The ALT model is flexible enough to produce a variety of discrepant model-implied change trajectories. While some researchers consider this a virtue, others have cautioned that this may confound interpretations of the model's parameters. In this article, we show that some—but not all—of these interpretational difficulties may be clarified mathematically and tested explicitly via likelihood ratio tests (LRTs) imposed on the initial conditions of the model. We show analytically the nested relations among three variants of the ALT model and the constraints needed to establish equivalences. A Monte Carlo simulation study indicated that LRTs, particularly when used in combination with information criterion measures, can allow researchers to test targeted hypotheses about the functional forms of the change process under study. We further demonstrate when and how such tests may justifiably be used to facilitate our understanding of the underlying process of change using a subsample (N = 3,995) of longitudinal family income data from the National Longitudinal Survey of Youth.     

起始音素的特点对命名反应时记录的影响

通过对344个汉语单字词26名被试的平均命名反应时分析发现,起始音素不同的词的命名反应时之间存在差异,而且此差异在排除字频、获得年龄(Age of acquisition)、规则性、一致性、可表象性、笔画数、书面学习年龄、声旁成字频率等因素作用后仍然存在。起始音素为元音和浊辅音的字词比清辅音的字词反应时短,清辅音当中塞擦音反应时最长。讨论了这种差异的可能原因,并对字词命名实验提出了相关建议。     

Identities and Their Uses: Response to ��Rate, Probability And Matching�� by Rachlin And Locey

Some of the differences between Rachlin & Locey (2010) and Thorne (2010) are due to what assumptions are taken as givens versus questionable. Most of the other apparent differences are largely linguistic and can be resolved by agreeing on terminology. The identity combining both rate and probability of reinforcement is general, has already revealed order not previously noted, even in its currently simple form, and provides a way of incorporating additional variables known to influence and characterize behavior.     

Persistence of Initial Misanalysis With No Referential Ambiguity

Previous research reported that in processing structurally ambiguous sentences comprehenders often preserve an initial incorrect analysis even after adopting a correct analysis following structural disambiguation. One criticism is that the sentences tested in previous studies involved referential ambiguity and allowed comprehenders to make inferences about the initial interpretation using pragmatic information, suggesting the possibility that the initial analysis persisted due to comprehenders' pragmatic inference but not to their failure to perform complete reanalysis of the initial misanalysis. Our study investigated this by testing locally ambiguous relative clause sentences in Japanese, in which the initial misinterpretation contradicts the correct interpretation. Our study using a self‐paced reading technique demonstrated evidence for the persistence of the initial analysis with this structure. The results from an eye‐tracking study further suggested that the phenomenon directly reflected the amount of support given to the initial incorrect analysis prior to disambiguating information: The more supported the incorrect main clause analysis was, the more likely comprehenders were to preserve the analysis even after the analysis was falsified. Our results thus demonstrated that the preservation of the initial analysis occurs not due to referential ambiguities but to comprehenders' difficulty to fully revise the highly supported initial interpretation.     

文化的考量:积极心理学当下之困与未来

积极心理学正在经历着从闲庭信步到临渊而立的转向。这种转向,既凸显了主流心理学面临着来自以积极心理学为代表的新兴势力的挑战与压力,同时,也表明积极心理学自身暴露出的短板与局限,以及由此向文化寻求支持的一种诉求,更是为寻求破局而作出的努力。可以预见,积极心理学将会以脑认知革命到来为契机,不断理顺积极心理、脑和文化环境三者关系,实现对心理学范式变革的显著的引领作用。     

低卷入情境中品牌远延伸的成功机制

品牌延伸是近年营销学界的一个研究热点。多数实证研究表明,母品牌认知、母品牌好感、延伸类别与母品牌类别之间的拟合度以及母品牌特定联想对品牌延伸评价有重要的影响作用。然而,已有理论在解释跨类别的远距离延伸的成功机制上比较乏力。本研究采用实证方法对这一点进行了补充。考虑到初始延伸评价所处的低卷入情境,概念层级较高的品牌相关变量在品牌远延伸评价中有重要的影响作用,本研究对三个品牌相关变量：品牌类别固着度、品牌抽象性与功能性特点、品牌声誉的主效应采用三个控制实验进行了测查。实验结果表明,较小的类别固着度,较高的品牌抽象性特点,以及较高的品牌声誉是品牌远延伸获得成功的机制保证。