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991.
    
Progressive-interval performances are described using measures that have proven to be successful in the analysis of fixed-interval responding. Five rats were trained with schedules in which the durations of consecutive intervals increased arithmetically as each interval was completed (either 6-s or 12-s steps for different subjects). The response patterns that emerged with extended training (90 sessions) indicated that performances had come under temporal control. Postreinforcement pausing increased as a function of the interval duration, the pauses were proportional to the prevailing duration, and the likelihood of the first response within an interval increased as the interval elapsed. To assess the resistance of these patterns to disruption, subjects were trained with a schedule that generated high response rates and short pauses (variable ratio). When the progressive-interval schedule was reinstated, pausing was attenuated and rates were elevated, but performances reverted to earlier patterns with continued exposure. The results indicated that temporal control by progressive-interval schedules, although slow to develop, is similar in many respects to that for fixed-interval schedules.  相似文献   
992.
  总被引:1,自引:0,他引:1  
During the last two decades, the Adult Attachment Interview (AAI) has attracted growing interest from psychoanalysts concerned with empirical research. The paper discusses the application of Crittenden's Dynamic-Maturational AAI method for assessing the outcome of psychoanalysis. The aim is to demonstrate, through a case presentation, how therapeutic change can be expressed in the AAI. The pre- and post-treatment interviews of one patient, having completed a four-times-a-week psychoanalysis, are presented. It is demonstrated that the detailed discourse analysis of the AAI, based on transcribed tape-recorded interviews, focuses subtle formal elements of language and speech reflecting dominant patterns of affect regulation and object relating. The AAI text analysis provides possibility for coding procedural memory as conveyed by the handling of the relationship to the interviewer, incorporating the dynamic relationship between researcher and subject and thus complying with a methodological prerequisite regarded by many psychoanalysts as necessary for capturing data that are relevant to psychoanalysis. On this background, the method emerges as promising for psychoanalytic outcome studies.  相似文献   
993.
    
Undergraduates responded under a variable-ratio 30 schedule in the presence of a 25-mm long line and on a differential-reinforcement-of-low-rate 6-s schedule when a 13-mm long line was present. Following this, a line-length continuum generalization test was administered under a fixed-interval 6-s schedule (Experiment 1) or extinction (Experiment 2). In both experiments, obtained generalization gradients conformed to typical postdiscrimination gradients. Responses were frequent under stimuli physically similar to the 25-mm line and infrequent under stimuli physically similar to the 13-mm line. The generalization gradients were generally asymmetric with peak response rates occurring at line lengths greater than 25 mm.  相似文献   
994.
    
The behavioral economic concept of unit price predicts that consumption and response output (labor supply) are determined by the unit price at which a good is available regardless of the value of the cost and benefit components of the unit price ratio. Experiment 1 assessed 4 pigeons' consumption and response output at a range of unit prices. In one condition, food was available according to a range of fixed-ratio schedules, whereas in the other condition, food was available according to a range of random-ratio schedules. Consistent with unit price predictions, consumption and response output were approximately equivalent across schedule types within the lower range of unit prices. However, at Unit Prices 64 (ratio value = 192) and greater, considerably more consumption and response output were observed in the random-ratio condition. Experiment 2 replicated these findings with 4 pigeons using the rapid demand curve assay procedure that is commonly used in the behavioral economics literature. Findings are integrated with two mathematical models of behavior under variable reinforcer delays.  相似文献   
995.
Behavioral pharmacology has become increasingly independent of the experimental analysis of behavior. At its beginning, behavioral pharmacology was closely related to the experimental analysis of behavior, with developments in each field aiding the other. Early attempts to systematize data in behavioral pharmacology culminated with the development of the rate-dependency concept, but as this principle was found to have more limited generality than originally was hoped, a theoretical void developed. This circumstance was followed by increased reliance on pharmacological theory as a basis for experimentation and interpretation, with an attendant decrease in emphasis on environmental variables and behavioral interpretations. Lack of interplay between behavioral pharmacology and the experimental analysis of behavior is detrimental to both disciplines because each could contribute significantly to the other. The current trend might be reversed if more research were directed at elucidating behavioral mechanisms of drug action.  相似文献   
996.
ABSTRACT

Vortices and antivortices are topological defects that could be exploited in high-density storage devices. Using first-principles calculations, we found vortex-like patterns around charged domain walls that are closely related to the tilt angles of charged 180° domain walls relative to the [100] direction. With decreasing tilt angle, the vortex-like patterns evolve from independent antivortices to vortex-antivortex pairs, and then to the inexistence of vortex or antivortex defects. These findings might promote to understand the atomic scale structures of 180° domain walls and open a new pathway to manipulating vortex structures to obtain novel properties.  相似文献   
997.
Misconceptions abound about teleological behaviorism (TB). Because very few people other than the author publicly call themselves teleological behaviorists, the fault must be mine. The present article is an attempt to clear up those misconceptions. First I will try to indicate what teleological behaviorism is not. Then, in the form of six fables (loosely connected stories, allegories, analogies, fairy tales, and arguments), I will try to give the reader an understanding of what teleological behaviorism actually is.  相似文献   
998.
Along the lines of the evidence-based recommendations, we developed a multi-disciplinary intervention for overweight children 7- to 12-years-old, primarily aiming at helping children to adopt healthier eating habits and a physically active lifestyle. The program combined nutrition intervention, based on a non-dieting approach, with physical activity intervention, implemented through the basic principles of Cognitive Behavioral Therapy (CBT), along with parental support. The program was conducted by dieticians with the collaboration of child psychiatrists and pediatricians. Training and regular supervision upon CBT priniciples application was intended to enhance dieticians' efficiency. The intervention is currently being evaluated to determine its effectiveness in treating childhood obesity.  相似文献   
999.
Funderburk and Eyberg (1989) described the psychometric properties of the Sutter-Eyberg Student Behavior Inventory (SESBI), a teacher rating scale of disruptive behaviors, for a sample of 55 preschool children. Additional data on the SESBI are presented for a sample of 60 preschool children. While both studies produced almost identical reliability and validity analyses, the scale score means are statistically and clinically different (i.e., a child in the clinical range in one study would be in the middle of the normal range in the other). These findings are used to emphasize the distinction between well-standardized norms and the psychometric properties of a measure. Suggestion are also made as to how behavioral assessment can more thoroughly attend to both of these properties of a measure.  相似文献   
1000.
Child noncompliance is one of the most frequently reported behavior problems in clinic-referred children. One difficulty with treating noncompliance in the clinic is that the demand characteristics of the situation may alter the rates of child compliance. The observation of parent-child interactions, with an emphasis on parent behaviors, may be a more meaningful way to assess parent training programs. In the current study, the parents of three children each showed a distinctive pattern in their responding to their children's compliant and noncompliant behaviors. An in vivo direct instruction procedure, that involved the therapist working directly with the parent to provide immediate consequences was used. Following training, improvements in correct responding were evident for al parents. Particularly noteworthy was that child compliance was not an accurate indicator when assessing parents' initial skill levels.  相似文献   
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