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51.
Two new tests for a model for the response times on pure speed tests by Rasch (1960) are proposed. The model is based on the
assumption that the test response times are approximately gamma distributed, with known index parameters and unknown rate
parameters. The rate parameters are decomposed in a subject ability parameter and a test difficulty parameter. By treating
the ability as a gamma distributed random variable, maximum marginal likelihood (MML) estimators for the test difficulty parameters
and the parameters of the ability distribution are easily derived. Also the model tests proposed here pertain to the framework
of MML. Two tests or modification indices are proposed. The first one is focused on the assumption of local stochastic independence,
the second one on the assumption of the test characteristic functions. The tests are based on Lagrange multiplier statistics,
and can therefore be computed using the parameter estimates under the null model. Therefore, model violations for all items
and pairs of items can be assessed as a by-product of one single estimation run. Power studies and applications to real data
are included as numerical examples. 相似文献
52.
Stephanie?G.?Murdock Robert?E.?O’NeillEmail author Echo?Cunningham 《Journal of Behavioral Education》2005,14(1):5-18
There is currently controversy over the validity and applicability of functional behavioral assessment (FBA) procedures with students with emotional/behavioral disorders (E/BD). A set of FBA procedures, including teacher and student interviews and direct classroom observations, were carried out with eight students with disabilities (7 classified E/BD, one classified LD). Results indicated that when all three methods (teacher/student interviews, classroom observations) yielded a ranking for a function they agreed 64% of those occasions. For those situations in which there was overall disagreement there was agreement between teacher interview and classroom observations most of the time. Social validity data indicated that both students and teachers felt that the assessment procedures were a useful and productive process. 相似文献
53.
Fisher WW DeLeon IG Rodriguez-Catter V Keeney KM 《Journal of applied behavior analysis》2004,37(2):171-184
Recent research has shown that the noncontingent delivery of competing stimuli can effectively reduce rates of destructive behavior maintained by social-positive reinforcement, even when the contingency for destructive behavior remains intact. It may be useful, therefore, to have a systematic means for predicting which reinforcers do and do not compete successfully with the reinforcer that is maintaining destructive behavior. In the present study, we conducted a brief competing stimulus assessment in which noncontingent access to a variety of tangible stimuli (one toy per trial) was superimposed on a fixed-ratio 1 schedule of attention for destructive behavior for individuals whose behavior was found to be reinforced by attention during a functional analysis. Tangible stimuli that resulted in the lowest rates of destructive behavior and highest percentages of engagement during the competing stimulus assessment were subsequently used in a noncontingent tangible items plus extinction treatment package and were compared to noncontingent attention plus extinction and extinction alone. Results indicated that both treatments resulted in greater reductions in the target behavior than did extinction alone and suggested that the competing stimulus assessment may be helpful in predicting stimuli that can enhance the effects of extinction when noncontingent attention is unavailable. DESCRIPTORS: Attention-maintained problem behavior, competing stimuli, extinction, functional analysis, noncontingent reinforcement 相似文献
54.
We evaluated the effects of systematic application and removal of protective equipment on three topographies of self-injurious behavior (SIB) exhibited by a girl who had been diagnosed with autism. Results showed that when protective equipment was applied, SIB decreased to near-zero levels. In addition, withdrawal of protective equipment for specific topographies of SIB (by removing only the corresponding padding) increased rates of SIB only for that topography of SIB. Next, a functional analysis of hand SIB showed that protective equipment suppressed this behavior in all conditions and that the behavior was maintained by automatic reinforcement when padding was removed. Results are discussed in terms of sensory extinction as a possible mechanism responsible for response suppression. 相似文献
55.
The results of a functional analysis showed that inappropriate sexual behaviors exhibited by a 9-year-old boy who had been diagnosed with traumatic brain injury were maintained by positive reinforcement in the form of social attention. An intervention consisting of functional communication training and extinction resulted in reduced levels of inappropriate sexual behaviors. 相似文献
56.
57.
Functional analysis and treatment of verbal perseverations displayed by an adult with autism 总被引:1,自引:0,他引:1
The function of perseverative speech for an adult man who had been diagnosed with autism and mental retardation was examined. Results showed that verbal perseverations were maintained by social attention. An intervention consisting of differential reinforcement of appropriate verbal responses and extinction of perseverative verbal responding was effective in decreasing verbal perseverations. 相似文献
58.
Functional analysis and treatment of self-injurious behavior in young children a summary of 30 cases
Kurtz PF Chin MD Huete JM Tarbox RS O'Connor JT Paclawskyj TR Rush KS 《Journal of applied behavior analysis》2003,36(2):205-219
The assessment and treatment of self-injurious behavior (SIB) has received much attention in the literature; however, few studies have focused on early intervention for this behavior. In the current study, functional analyses with developmentally appropriate modifications were conducted in an outpatient clinic with 30 children (aged 10 months to 4 years 11 months) to assess SIB and problem behavior in its early stages. The reported mean age of SIB onset was 17 months, and head banging was the most prevalent topography. Functional analyses identified sources of reinforcement for SIB in 62.1% of cases; with the inclusion of all forms of problem behavior, sources of reinforcement were identified for 87.5% of cases. Function-based treatments were developed for 24 cases, with functional communication training prescribed most often (70.8% of cases). Implications of these findings for the development of early intervention programs for SIB are discussed. 相似文献
59.
60.
Bates MP 《Clinical child and family psychology review》2001,4(1):63-84
Measures of impairment in psychological and behavioral functioning have a long history in the field of children's mental health, and appear particularly useful in eligibility determination, treatment planning, and outcome evaluation of services for children and adolescents with serious emotional disturbance (SED). One recently developed multidimensional measure of functional impairment—the Child and Adolescent Functional Assessment Scale (CAFAS; K. Hodges, 1989, 1997)—has enjoyed widespread use nationwide. It has been adopted as a tool for making treatment eligibility decisions and documenting outcomes on a statewide level in more than 20 states and on a local level in dozens of research and demonstration projects. In this paper, the technical merits of the CAFAS are closely examined, with the conclusion that empirical evidence is lacking to support its valid use in making the types of treatment decisions for which it is currently being employed across the nation. Furthermore, there appears to be little concern among mental health researchers, practitioners, administrators, and state legislators about these apparent limitations of the CAFAS. The potential benefits of establishing objective and valid level-of-need criteria, using the CAFAS are numerous and the interest in doing so is clear; however, the psychometric limitations of the scale identified in this review need to be addressed before its full potential can be realized. 相似文献