Concept mapping is a conceptualization process that can be used by individuals and groups to develop conceptual frameworks which can guide evaluations and planning (Trochim, 1989). In research, these processes display individual and group representations of concepts about particular domains, illustrating potential relationships among them (Miles, 1994). Cognitive mapping processes involve the acquisition, store, access and utilization of spacial knowledge (Golledge, 1986). Empirical research using concept mapping technology has proliferated within the past fifteen years. Investigation of this research has revealed the existence of a wide variation of domains of inquiry and applications of concept mapping. Using non-traditional meta-analytic research techniques employed in prior reviews by Cousins and associates (Cousins, 1996; Cousins & Earl, 1992; Cousins & Leithwood, 1986; Ross, in press) and others (e.g., Leithwood & Montgomery, 1982), the empirical research studies are explored with relevance to evaluation theory and practice. Emphasis on concept mapping process variations and use in evaluation is ordered. This study provides researchers and evaluators with valuable empirical basis from which to make choices regarding selection and applications of concept mapping.

The purposes of this study were to determine the relationships of participant socio-economic characteristics to the post-test, to investigate the effects of pre-testing in a short-term adult education programme, and to assess the influence of pre-course utilization of the handbooks on pre-test and post-test scores. The study was carried out on a group of 324 commercial pesticide applicators who attended 16 individual short courses conducted in 1972 by the British Columbia Department of Agriculture as a means of upgrading the participants' knowledge of the safe and proper uses of pesticides. The design used was a modification of the pre-test/post-test control group type with 135 individuals assigned to the treatment condition and 189 assigned to the control. Three hypotheses were tested in the study. The hypothesis of primary concern attempted to determine whether pre-testing the participants significantly improved their post-test scores. A second hypothesis was tested to determine whether a relationship existed between the socio-economic variables and the post-test scores. A final hypothesis was tested to determine whether the intensity of pre-course handbook utilization significantly influenced pre-test and post-test mean scores. No differential effect due to significant treatment-control differences were observed in the variables: area of origin of participants, proportion of salary earned from pesticide application, previous attendance at BCDA sponsored short courses, previous attendance at related, non-BCDA short courses, and number of pesticide application certificates held. The control group were of significantly higher age, had a longer period of residence in Canada, and had more experience as pesticide applicators than the treatment group. The effects of each of these characteristics upon the post-test was negligible because of their low individual correlation with the post-test scores. The three variables; previous attendance at BCDA sponsored short courses, previous attendance at related non-BCDA short courses, and number of pesticide application certificates held, exhibited a significantly high degree of mutual inter-correlation. This indicated the variables were measuring a common factor such as a need to participate. Both educational level and pre-test scores significantly influenced the post-test mean score although the influence of the latter was definitely more pronounced. The intensity of handbook utilization positively influenced only the post-test mean score of those participants who received no pre-test. This indicated the pre-test was a better means of improving the post-test mean score than pre-course distribution of the handbooks. / Education, Faculty of / Graduate

The use of optical techniques for the study of vibrating surfaces has thus far been limited to measuring small amplitudes on the order of a few hundred microinches. To extend the measuring range to much larger amplitudes a completely new technique is sought. In this thesis optical vibration methods are presented that allow amplitudes of .001" and up to be investigated, the upper limit being determined solely by the prohibitive size and cost of the equipment. The study is based on a combination of the shadow moire deflection measuring method and the Salet-Ikeda slope measuring method which, as far as the author knows, have been applied only to the study of static situations. It is shown how these two methods may be applied to the dynamic case to permit the direct visualization of nodal and antinodal locations and displacements in vibrating plates. Three specimens are studied: a cantilever beam, a square cantilever plate and a circular free plate. Complete photographic results along with theoretical or experimental solutions are given for each specimen. / Applied Science, Faculty of / Mechanical Engineering, Department of / Graduate

The microwave resonator method for studying small amplitude surface waves in liquids has been improved by making the time measurement more accurate and much more convenient. It was used to measure the oscillation frequency of the surface as a function of liquid depth. Discrepancies between the experimentally obtained results and theoretical predictions due to the rigidity of the mercury meniscus where contact is made with the walls of a cylindrical resonator were found. From these an accurate value for the effective reduction in radius of the resonator because of the meniscus effect was obtained. A method was developed for applying strong electrostatic fields (about 20 kV/cm) onto the fluid surface without interfering with the measuring technique. An interesting result of this was the observation that the field cleans the surface from contamination. This phenomenon manifests itself in a marked reduction in the damping of surface waves just after a large field is applied. A resonator of square cross-section was used to demonstrate the Fourier analyzing property of rectangular resonators. / Science, Faculty of / Physics and Astronomy, Department of / Graduate

Throughout the last two decades, physical educators have worked to develop a specific body of knowledge. Associated with the formation of this body of knowledge has been a trend by most physical educators to include a cognitive objective as one of the stated aims in their physical education, curricula. As a result, the need for adequate knowledge assessment instruments has become apparent. Although some assessment of knowledge in physical and health education has occurred since the late 1920's, the majority of tests which have been developed to date are directed towards the evaluation of knowledge in specific sports or activities. Relatively few tests are available that assess general knowledge concepts in physical education. As well, all of the knowledge tests that have been produced are norm-referenced' instruments. That is, they have been constructed for the purpose of ranking individuals and comparing differences among them. The purpose of this study was to design a criterion-referenced test which would assess the physical education knowledge of grade eleven high school students in British Columbia and which could function as a measurement instrument for the evaluation of groups or classes. As a criterion-referenced assessment tool, the knowledge test assesses the performance of individuals based on' objectives which had been previously formulated by the Learning Assessment Branch of the Ministry of Education in British Columbia. In order to prepare a table of specifications for the design of the test, the specific objectives to be measured were grouped into six subtest areas. Multiple-choice items were then constructed according to the requirements of the table of specifications. For the initial pilot administration of the test, two test forms, of 48 items each, were developed. Each of these forms included three of the six sub-test areas. One half of the 288 students to whom the first pilot was administered answered Form A while the remaining students answered Form B. Following the administration of pilot test 1, the results obtained were analysed by the Laboratory of Educational Research Test Analysis Package (LERTAP), and were subjectively reviewed by an advisory panel. As a result of these procedures, 70 items were retained for use on the second pilot test. This test was administered to 133 students and the results were again analysed subjectively and psychometrically. Thirty-eight items from pilot test 2 were considered acceptable for use on the final pilot test. In order to maintain adherence to the table of specifications, nine new items were developed and after approval by the advisory panel, were included on the third test form. This form was given to 800 grade eleven students and the responses of 250 randomly selected students were analysed by the LERTAP procedure. The analysis indicated that all items were psychometrically sound and the reliability of this form was estimated at .71. Thus, the items utilized during the third pilot administration constituted the final form of the knowledge test. The test is suitable for evaluating groups and the six sub-tests, as well as the total test, can be used to identify strengths and weaknesses within programs. / Education, Faculty of / Kinesiology, School of / Graduate

Stormflow generation was studied in a two square kilometre, sub-alpine, first-order basin tributary to Ryan River, which is in the Pacific Ranges of the Coast Mountains of British Columbia. Preliminary field work suggested that neither saturation overland flow nor subsurface stormflow were important mechanisms of stormflow generation Hortonian overland flow appeared to be dominant. The infiltrability of the soils dropped considerably during storm events. Three possible causes of this decline were considered initially: (1) a reduction in capillary gradients as wetting proceeds, (2) a textural contrast in the profile, and (3) air entrapment. All of the preceeding were rejected on the basis of more detailed observations. Instead, it was proposed that a water-repellent layer existed near the top of the soil profile. Laboratory experiments conducted on intact soil samples demonstrated that a repellent layer on the order of a few centimetres thickness did exist near the soil surface. The implications of this finding for infiltration and stormflow generation are discussed. / Arts, Faculty of / Geography, Department of / Graduate

<p> Test anxiety is a phenomenon which has been researched for decades. Student performance, goal attainment, and personal lives are all negatively affected by the multiple factors of test anxiety. This quantitative study was designed to determine if a particular relaxation technique, called sensory activation, could mitigate the symptoms and effects of test anxiety. The Test and Anxiety Examination Measure, developed by Brooks, Alshafei, and Taylor (2015), was used to measure test anxiety levels before and after implementation of the sensory activation relaxation technique. Two research questions guided the study using not only the overall test anxiety score from the Test and Anxiety Examination Measure, but also using the five subscale scores provided within the instrument. After collection and analysis of data, the results for research question one indicated a statistically significant positive difference in mean levels of overall test anxiety. Not only were overall mean test anxiety levels lowered, but findings for research question two showed significant decreases in worry and state anxiety subscale scores. Considering the sensory activation relaxation technique was used during the examination period, it is reasonable to assume its effectiveness would be limited to lowering state anxiety levels rather than trait anxiety levels. Also, results from prompt 10 of the Test and Examination Anxiety Measure (Brooks et al., 2015) indicated the sensory activation relaxation technique could serve as a possible deterrent to the &ldquo;going blank&rdquo; problem as described anecdotally by students. Instructors could introduce the sensory activation relaxation technique to their students prior to the first testing event in the course, thus producing the desired outcomes of better test performance and less anxiety. </p>

With scant research to draw upon with respect to the maintenance of vertical scales over time, decisions around the creation and performance of vertical scales over time necessarily suffers due to the lack of information. Undetected item parameter drift (IPD) presents one of the greatest threats to scale maintenance within an item response theory (IRT) framework. There is also still an outstanding question as to the utility of the Rasch model as an underlying viable framework for establishing and maintaining vertical scales. Even so, this model is currently used for scaling many state assessment systems. Most criticisms of the Rasch model in this context have not involved simulation. And most have not acknowledged conditions in which the model may function sufficiently to justify its use in vertical scaling. To address these questions, vertical scales were created from real data using the Rasch and 3PL models. Ability estimates were then generated to simulate a second (Time 2) administration. These simulated data were placed onto the base vertical scales using a horizontal vertical scaling approach and a mean-mean transformation. To examine the effects of IPD on vertical scale maintenance, several conditions of IPD were simulated to occur within each set of linking items. In order to evaluate the viability of using the Rasch model within a vertical scaling context, data were generated and calibrated at Time 2 within each model (Rasch and 3PL) as well as across each model (Rasch data generataion/3PL calibration, and vice versa). Results pertaining the first question of the effect IPD has on vertical scale maintenance demonstrate that IPD has an effect directly related to percentage of drifting linking items, the magnitude of IPD exhibited, and the direction. With respect to the viability of using the Rasch model within a vertical scaling context, results suggest that the Rasch model is perfectly viable within a vertical scaling context in which the model is appropriate for the data. It is also clearly evident that where data involve varying discrimination and guessing, use of the Rasch model is inappropriate.

The purpose of this study was to determine whether an eighth grade state-level math assessment contained items that function differentially (DIF) for English Learner students (EL) as compared to English Only students (EO) and if so, what factors might have caused DIF. To determine this, Differential Item Functioning (DIF) analysis was employed. Subsequently, a Mixture Item Response Theory Model (MIRTM) was fit to determine why items function differentially for EL examinees. Several additional methods were employed to examine what item level factors may have caused ELs difficulty. An item review by a linguist was conducted to determine what item characteristics may have caused ELs difficulty; multiple linear regression was performed to test whether identified difficult characteristics predict an item's chi-squared values; and distractor analysis was conducted to determine whether there were certain answer choices that were more attractive to ELs. Logistic regression was performed for each item to test whether the student background variables of poverty and first language or being an EL predicted item correctness. The DIF results using Lord's Chi-Squared test identified 4 items as having meaningful DIF >0.2 using the range-null hypothesis. Of those items, there were 2 items favoring the EO population that were identified as assessing the Data Analysis, Statistics and Probability strand of the state Math Standards. As well, there were 2 DIF items that favored the EL population that were identified as assessing the Number Sense and Operations strand of the state Math Standards. The length of the item as judged in the item review supported several items that were identified as DIF. The Mixture IRT Model was run using 3 conditions. It was found that with all three conditions, the overall latent class groupings did not match those of the manifest groups of EO and EL. To probe further into the results of the latent class groupings, the student background variables of poverty, language proficiency status or first language spoken were compared to the latent class groupings. In looking at these results, it was not evident that these student background variables better explain the latent class groupings.

In adaptive testing, including multistage adaptive testing (MST), the psychometric properties of the test items are needed to route the examinees through the test. However, if testing programs use items which are automatically generated at the time of administration there is no opportunity to calibrate the items therefore the items' psychometric properties need to be predicted. This simulation study evaluates the accuracy with which examinees' abilities can be estimated when automatically generated items, specifically, item clones, are used in MSTs. The behavior of the clones in this study was modeled according to the results of Sinharay and Johnson's (2008) investigation into item clones that were administered in an experimental section of the Graduate Record Examination (GRE). In the current study, as more clones were incorporated or when the clones varied greatly from the parent items, the examinees' abilities were not as accurately estimated. However, there were a number of promising conditions; for example, on a 600-point scale, the absolute bias was less than 10 points for most examinees when all items were simulated to be clones with small variation from their parent items or when all first stage items were simulated to have moderate variation from their parents and no items in the second stage were cloned items.