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81.
Subjects were tested on the critical flicker frequency during a 1-week period of visual deprivation (either homogeneous illumination or darkness). Deprived subjects showed no significant differences from a confined control group. Results were discussed in relation to previous research, Schultz’s theory of “sensoristasis” and Sharpless’ revision of the “law of denervation.” 相似文献
82.
Fixation within a modified Poggendorff display was used to assess Pressey's hypothesized construct of attentive fields. In Experiment I the results for fixating near the bottom of the display supported the predictions based on Pressey's construct; however, results from fixating near the top of the display were more easily explained by a tilt effect noted by Zajac (1957).
Experiment II and III replicated the first experiment and obtained independent measures of the tilt effect. After the tilt effect was subtracted from the Poggendorff scores, the prediction based upon the attentive field construct was supported in the top fixation condition; however, only Experiment II provided support for the prediction in the bottom fixation condition. 相似文献
Experiment II and III replicated the first experiment and obtained independent measures of the tilt effect. After the tilt effect was subtracted from the Poggendorff scores, the prediction based upon the attentive field construct was supported in the top fixation condition; however, only Experiment II provided support for the prediction in the bottom fixation condition. 相似文献
83.
Gretchen Conn Paul Stafiniak Madeline C. Dipasquale Lyn Harper 《Behavior research methods》1988,20(2):184-187
In the introductory psychology laboratory at Drexel University, we employ courseware modules that transform the computer into various pieces of psychological research equipment. Students enrolled in this course use the courseware modules in a series of experiments that investigate motor learning, perception, memory, and other psychological phenomena. In choosing this form of computerization, we have encountered challenges to our methods of instruction, both in the laboratory and in the lecture hall. Opportunities, in the form of financial and programming assistance, have also resulted from our computerization efforts. 相似文献
84.
85.
Harper VB 《Psychological reports》2005,97(3):903-906
E-mail is used to maintain two primary human relationships, interaction between individuals and preserving relationships with organizations. 278 participants from a medium-size university in the southwest completed two measures developed to assess the quantity of e-mail used to maintain interpersonal and organizational relationships. Analysis indicated that men (M = 5.8, SD = 2.7) and women (M = 6.6, SD = 2.5) significantly differed in frequency of e-mail used to maintain interpersonal relationships, but not in reference to organizational maintenance. 相似文献
86.
87.
Robert G. Harper Ranjit C. Chacko Doreen Kotik-Harper James Young Jennifer Gotto 《Journal of clinical psychology in medical settings》1998,5(2):187-198
The utility of the Millon Behavioral Health Inventory (MBHI) in screening for the formal diagnosis of a psychiatric disorder was investigated in a sample of 90 heart transplant candidates, a population at risk for psychiatric disturbance. Psychiatric disorders were identified in 71% of patients, the majority being adjustment disorder. Sensitivity and specificity rates of >70% were determined in discriminant function analyses, for presence or absence of a psychiatric condition. When Axis I conditions were differentiated as mild (adjustment reaction only) or severe (all other Axis I conditions, including comorbid Axis II disorders), the MBHI correctly identified every severe case as a probable psychiatric diagnosis. The rate of clinically significant elevations on certain MBHI scales and severity of Axis I psychiatric condition was also significantly associated. These findings suggest that the MBHI may have potential utility in identifying high-risk patients with diagnosable psychiatric conditions and help justify mental health consultation referrals at a time when managed care entities are vigorously rationing ancillary services with medically ill populations. 相似文献
88.
William Harper 《Synthese》1998,116(1):27-49
I attempt to persuade the reader that externalism admits of no plausible interpretation. I argue that reliability is a concept
with very different contours from epistemic justification, and that attempts to explicate justification in terms of reliability
must fail. I address several other forms of externalism, and also mixed forms of justification. I then argue that externalist
theories of justification cannot close the gap between mere true belief and knowledge. I suggest that a fourth condition on
knowledge is required, regardless of whether justification is internalist or externalist. I argue that with such a fourth
condition a strong internalist theory of justification is adequate to the task that remains in making true belief knowledge.
Additionally, strong internalism is more satisfying to our intuitions than externalism and mixed forms of justification.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
89.
Mark A. Barnett Guy D. Vitaglione Jeffrey S. Bartel Birgit S. Valdez Lee Ann Steadman Kemberly K. G. Harper 《Current Psychology》1998,17(2-3):170-187
Two studies were conducted to assess the relationship between an individual's self-described motivation for being a help-provider
(i.e., a lawyer in Study 1 and a physi-cian in Study 2) and college undergraduates' perceptions of, and desire to seek assis-tance
from, that help-provider. The major findings were incongruent with the notion inferred from the helping literature that altruistically
motivated help-providers would be consistently evaluated more favorably than, and preferred over, egoistically moti-vated
help-providers. Specifically, whereas the other-oriented help-providers were rated as more likable, honest, and less devious
than the self-oriented help-providers, the self-oriented help-providers were rated as more ambitious, competent, and as earning
more money than the other-oriented help-providers. Moreover, although the participants' “desire to hire” a particular help-provider
was found to be associated with: (1) their perceptions of the help-provider's characteristics (Studies 1 and 2), (2) their
own self-reported characteristics (Study 1), and (3) their anticipated affective state prior to seeking assistance (Studies
1 and 2), no clear relation was found in either study between the help-provider's motivation and the participants' desire
to seek assistance from that help-provider. In contrast to the ambivalence demonstrated in response to the altruistically
and egoistically motivated professional help-providers in Studies 1 and 2, participants in a preliminary study of perceptions
of “everyday” helpers demonstrated a clear preference for altruistically motivated assistance (al-though these participants'
evaluations were found to be influenced by the closeness of the relationship between the helper and recipient, the type of
help provided, the participants' gender, and the gender of the helper-recipient dyad). Considered to-gether, the pattern of
results suggests the broad range of situational and individual difference variables that may affect perceptions of, and reactions
to, self-oriented and other-oriented help-providers. 相似文献
90.
Harper DN 《Journal of the experimental analysis of behavior》1996,65(3):549-560
Response-independent food was delivered during a dark-key phase between two multiple-schedule components to explore its disruptive effects on responding. Responding in components was maintained by separate variable-interval 120-s schedules, with a 2-s reinforcer in Component 1 and a 6-s reinforcer in Component 2. Across conditions the rate and duration of response-independent food presentations were manipulated. The results showed that response rates in both components decreased as a function of the duration and the rate of response-independent food presentations; moreover, the decrease in response rate relative to the baseline level was larger in Component 1 than in Component 2. These findings were consistent with expectations from behavioral momentum theory, which predicts that if equal disruption (response-independent food in this case) is applied to responding in two components, then the ratio of response-rate change in Component 1 versus Component 2 should remain constant, irrespective of the magnitude of that disruption. 相似文献