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1.
This article presents a study of ethnic Differential Item Functioning (DIF) for 4th-, 7th-, and 10th-grade reading items on a state criterion-referenced achievement test. The tests, administered 1997 to 2001, were composed of multiple-choice and constructed-response items. Item performance by focal groups (i.e., students from Asian/Pacific Island, Black/African American, Native American, and Latino/Hispanic origins) were compared with the performance of White students using simultaneous item bias and Rasch procedures. Flagged multiple-choice items generally favored White students, whereas flagged constructed-response items generally favored students from Asian/Pacific Islander, Black/African American, and Latino/Hispanic origins. Content analysis of flagged reading items showed that positively and negatively flagged items typically measured inference, interpretation, or analysis of text in multiple-choice and constructed-response formats. Items that were not flagged for DIF generally measured very easy reading skills (e.g., literal comprehension) and reading skills that require higher level thinking (e.g., developing interpretations across texts and analyzing graphic elements).  相似文献   

2.
This article discusses and demonstrates combining scores from multiple-choice (MC) and constructed-response (CR) items to create a common scale using item response theory methodology. Two specific issues addressed are (a) whether MC and CR items can be calibrated together and (b) whether simultaneous calibration of the two item types leads to loss of information. Procedures are discussed and empirical results are provided using a set of tests in the areas of reading, language, mathematics, and science in three grades.  相似文献   

3.
The performance of English language learners (ELLs) has been a concern given the rapidly changing demographics in US K-12 education. This study aimed to examine whether students' English language status has an impact on their inquiry science performance. Differential item functioning (DIF) analysis was conducted with regard to ELL status on an inquiry-based science assessment, using a multifaceted Rasch DIF model. A total of 1,396 seventh- and eighth-grade students took the science test, including 313 ELL students. The results showed that, overall, non-ELLs significantly outperformed ELLs. Of the four items that showed DIF, three favored non-ELLs while one favored ELLs. The item that favored ELLs provided a graphic representation of a science concept within a family context. There is some evidence that constructed-response items may help ELLs articulate scientific reasoning using their own words. Assessment developers and teachers should pay attention to the possible interaction between linguistic challenges and science content when designing assessment for and providing instruction to ELLs.  相似文献   

4.
This paper considers a modification of the DIF procedure SIBTEST for investigating the causes of differential item functioning (DIF). One way in which factors believed to be responsible for DIF can be investigated is by systematically manipulating them across multiple versions of an item using a randomized DIF study (Schmitt, Holland, & Dorans, 1993). In this paper: it is shown that the additivity of the index used for testing DIF in SIBTEST motivates a new extension of the method for statistically testing the effects of DIF factors. Because an important consideration is whether or not a studied DIF factor is consistent in its effects across items, a methodology for testing item x factor interactions is also presented. Using data from the mathematical sections of the Scholastic Assessment Test (SAT), the effects of two potential DIF factors—item format (multiple-choice versus open-ended) and problem type (abstract versus concrete)—are investigated for gender Results suggest a small but statistically significant and consistent effect of item format (favoring males for multiple-choice items) across items, and a larger but less consistent effect due to problem type.  相似文献   

5.
《教育实用测度》2013,26(3):257-275
The purpose of this study was to investigate the technical properties of stem-equivalent mathematics items differing only with respect to response format. Using socio- economic factors to define the strata, a proportional stratified random sample of 1,366 Connecticut sixth-grade students were administered one of three forms. Classical item analysis, dimensionality assessment, item response theory goodness-of-fit, and an item bias analysis were conducted. Analysis of variance and confirmatory factor analysis were used to examine the functioning of the items presented in the three different formats. It was found that, after equating forms, the constructed-response formats were somewhat more difficult than the multiple-choice format. However, there was no significant difference across formats with respect to item discrimination. A differential item functioning (DIF) analysis was conducted using both the Mantel-Haenszel procedure and the comparison of the item characteristic curves. The DIF analysis indicated that the presence of bias was not greatly affected by item format; that is, items biased in one format tended to be biased in a similar manner when presented in a different format, and unbiased items tended to remain so regardless of format.  相似文献   

6.
Increasingly, tests are being translated and adapted into different languages. Differential item functioning (DIF) analyses are often used to identify non-equivalent items across language groups. However, few studies have focused on understanding why some translated items produce DIF. The purpose of the current study is to identify sources of differential item and bundle functioning on translated achievement tests using substantive and statistical analyses. A substantive analysis of existing DIF items was conducted by an 11-member committee of testing specialists. In their review, four sources of translation DIF were identified. Two certified translators used these four sources to categorize a new set of DIF items from Grade 6 and 9 Mathematics and Social Studies Achievement Tests. Each item was associated with a specific source of translation DIF and each item was anticipated to favor a specific group of examinees. Then, a statistical analysis was conducted on the items in each category using SIBTEST. The translators sorted the mathematics DIF items into three sources, and they correctly predicted the group that would be favored for seven of the eight items or bundles of items across two grade levels. The translators sorted the social studies DIF items into four sources, and they correctly predicted the group that would be favored for eight of the 13 items or bundles of items across two grade levels. The majority of items in mathematics and social studies were associated with differences in the words, expressions, or sentence structure of items that are not inherent to the language and/or culture. By combining substantive and statistical DIF analyses, researchers can study the sources of DIF and create a body of confirmed DIF hypotheses that may be used to develop guidelines and test construction principles for reducing DIF on translated tests.  相似文献   

7.
Many efforts have been made to determine and explain differential gender performance on large-scale mathematics assessments. A well-agreed-on conclusion is that gender differences are contextualized and vary across math domains. This study investigated the pattern of gender differences by item domain (e.g., Space and Shape, Quantity) and item type (e.g., multiple-choice i iIn this paper, two kinds of multiple-choice items are discussed: traditional multiple-choice items and complex multiple-choice items. A sample complex multiple choice item is shown in Table 6. The terms “multiple-choice” and “traditional multiple-choice” are used interchangeably to refer to the traditional multiple choice items throughout the paper, while the term “complex multiple-choice” is used to refer to the complex multiple-choice items. Raman K. Grover is now an Independent Psychometrician. items, open constructed-response items). The U.S. portion of the Programme for International Student Assessment (PISA) 2000 and 2003 mathematics assessment was analyzed. A multidimensional Rasch model was used to provide student ability estimates for each comparison. Results revealed a slight but consistent male advantage. Students showed the largest gender difference (d = 0.19) in favor of males on complex multiple-choice items, an unconventional item type. Males and females also showed sizable differences on Space and Shape items, a domain well documented for showing robust male superiority. Contrary to many previous findings reporting male superiority on multiple-choice items, no measurable difference has been identified on multiple-choice items for both the PISA 2000 and the 2003 math assessments. Reasons for the differential gender performance across math domains and item types were speculated, and directions of future research were discussed.  相似文献   

8.
The “Teacher Education and Development Study in Mathematics” assessed the knowledge of primary and lower-secondary teachers at the end of their training. The large-scale assessment represented the common denominator of what constitutes mathematics content knowledge and mathematics pedagogical content knowledge in the 16 participating countries. The country means provided information on the overall teacher performance in these 2 areas. By detecting and explaining differential item functioning (DIF), this paper goes beyond the country means and investigates item-by-item strengths and weaknesses of future teachers. We hypothesized that due to differences in the cultural context, teachers from different countries responded differently to subgroups of test items with certain item characteristics. Content domains, cognitive demands (including item difficulty), and item format represented, in fact, such characteristics: They significantly explained variance in DIF. Country pairs showed similar patterns in the relationship of DIF to the item characteristics. Future teachers from Taiwan and Singapore were particularly strong on mathematics content and constructed-response items. Future teachers from Russia and Poland were particularly strong on items requiring non-standard mathematical operations. The USA and Norway did particularly well on mathematics pedagogical content and data items. Thus, conditional on the countries’ mean performance, the knowledge profiles of the future teachers matched the respective national debates. This result points to the influences of the cultural context on mathematics teacher knowledge.  相似文献   

9.
When judgmental and statistical procedures are both used to identify potentially gender-biased items in a test, to what extent do the results agree? In this study, both procedures were used to evaluate the items in a statewide, 78-item, multiple-choice test of science knowledge. Only one item was flagged by the sensitivity reviewers as being potentially biased, but this item was not flagged by the statistical procedure. None of the nine items flagged by the Mantel-Haenszel procedure were flagged by the sensitivity reviewers. Eight of the nine statistically flagged items were differentially easier for males. Four of these eight measured the same category of objectives. The authors conclude that both judgmental and statistical procedures provide useful information and that both should be used in test construction. They caution readers that content-validity issues need to be addressed when making decisions based on the results of either procedure.  相似文献   

10.
Both multiple-choice and constructed-response items have known advantages and disadvantages in measuring scientific inquiry. In this article we explore the function of explanation multiple-choice (EMC) items and examine how EMC items differ from traditional multiple-choice and constructed-response items in measuring scientific reasoning. A group of 794 middle school students was randomly assigned to answer either constructed-response or EMC items following regular multiple-choice items. By applying a Rasch partial-credit analysis, we found that there is a consistent alignment between the EMC and multiple-choice items. Also, the EMC items are easier than the constructed-response items but are harder than most of the multiple-choice items. We discuss the potential value of the EMC items as a learning and diagnostic tool.  相似文献   

11.
This research examined component processes that contribute to performance on one of the new, standards-based reading tests that have become a staple in many states. Participants were 60 Grade 4 students randomly sampled from 7 classrooms in a rural school district. The particular test we studied employed a mixture of traditional (multiple-choice) and performance assessment approaches (constructed-response items that required written responses). Our findings indicated that multiple-choice and constructed-response items enlisted different cognitive skills. Writing ability emerged as an important source of individual differences in explaining overall reading ability, but its influence was limited to performance on constructed-response items. After controlling for word identification and listening, writing ability accounted for no variance in multiple-choice reading scores. By contrast, writing ability accounted for unique variance in reading ability, even after controlling for word identification and listening skill, and explained more variance in constructed-response reading scores than did either word identification or listening skill. In addition, performance on the multiple-choice reading measure along with writing ability accounted for nearly all of the reliable variance in performance on the constructed-response reading measure.  相似文献   

12.
本研究应用项目反应理论,从被试的阅读能力值和题目的难度值这两个方面,分析阅读理解测试中多项选择题命题者对考试效度的影响。实验设计中,将两组被试同时施测于一项“阅读水平测试”,根据测试结果估计出的两组被试能力值之间无显著性差异。再次将这两组被试分别施测于两位不同命题者所命制的题目,尽管这些题目均产生于相同的阅读材料,且题目的难度值之间并没有显著性差异,被试的表现却显著不同。Rasch模型认为,被试表现由被试能力和试题难度共同决定。因此,可以推测,这是由于不同命题者所命制的题目影响了被试的表现,并进而影响了使用多项选择题进行阅读理解测试的效度。  相似文献   

13.
In gender differential item functioning (DIF) research it is assumed that all members of a gender group have similar item response patterns and therefore generalizations from group level to subgroup and individual levels can be made accurately. However DIF items do not necessarily disadvantage every member of a gender group to the same degree, indicating existence of heterogeneity of response patterns within gender groups. In this article the impact of heterogeneity within gender groups on DIF investigations was investigated. Specifically, it was examined whether DIF results varied when comparing males versus females, gender × socioeconomic status subgroups and latent classes of gender. DIF analyses were conducted on reading achievement data from the Canadian sample of the Programme of International Student Assessment 2009. Results indicated considerable heterogeneity within males and females and DIF results were found to vary when heterogeneity was taken into account versus when it was not.  相似文献   

14.
This article describes a comparative study conducted at the item level for paper and online administrations of a statewide high stakes assessment. The goal was to identify characteristics of items that may have contributed to mode effects. Item-level analyses compared two modes of the Texas Assessment of Knowledge and Skills (TAKS) for up to four subjects at two grade levels. The analyses included significance tests of p-value differences, DIF, and response distributions for each item. Additional analyses investigated item position effects and objective-level mode differences. No evidence of item position effects emerged, but significant differences were found for several items and objectives in all subjects at grade 8 and in mathematics and English language arts (ELA) at grade 11. Differences generally favored the paper group. ELA items that were longer in passage length and math items that required graphing and geometric manipulations or involved scrolling in the online administration tended to be the items showing mode differences.  相似文献   

15.
Federal policy on alternate assessment based on modified academic achievement standards (AA-MAS) inspired this research. Specifically, an experimental study was conducted to determine whether tests composed of modified items would have the same level of reliability as tests composed of original items, and whether these modified items helped reduce the performance gap between AA-MAS eligible and ineligible students. Three groups of eighth-grade students (N?=?755) defined by eligibility and disability status took original and modified versions of reading and mathematics tests. In a third condition, the students were provided limited reading support along with the modified items. Changes in reliability across groups and conditions for both the reading and mathematics tests were determined to be minimal. Mean item difficulties within the Rasch model were shown to decrease more for students who would be eligible for the AA-MAS than for non-eligible groups, revealing evidence of differential boost. Exploratory analyses indicated that shortening the question stem may be a highly effective modification, and that adding graphics to reading items may be a poor modification.  相似文献   

16.
Gender fairness in testing can be impeded by the presence of differential item functioning (DIF), which potentially causes test bias. In this study, the presence and causes of gender-related DIF were investigated with real data from 800 items answered by 250,000 test takers. DIF was examined using the Mantel–Haenszel and logistic regression procedures. Little DIF was found in the quantitative items and a moderate amount was found in the verbal items. Vocabulary items favored women if sampled from traditionally female domains but generally not vice versa if sampled from male domains. The sentence completion item format in the English reading comprehension subtest favored men regardless of content. The findings, if supported in a cross-validation study, can potentially lead to changes in how vocabulary items are sampled and in the use of the sentence completion format in English reading comprehension, thereby increasing gender fairness in the examined test.  相似文献   

17.
Contrasts between constructed-response items and multiple-choice counterparts have yielded but a few weak generalizations. Such contrasts typically have been based on the statistical properties of groups of items, an approach that masks differences in properties at the item level and may lead to inaccurate conclusions. In this article, we examine item-level differences between a certain type of constructed-response item (called figural response) and comparable multiple-choice items in the domain of architecture. Our data show that in comparing two item formats, item-level differences in difficulty correspond to differences in cognitive processing requirements and that relations between processing requirements and psychometric properties are systematic. These findings illuminate one aspect of construct validity that is frequently neglected in comparing item types, namely the cognitive demand of test items.  相似文献   

18.
The purpose of this article is to describe and demonstrate a three-step process of using differential distractor functioning (DDF) in a post hoc analysis to understand sources of differential item functioning (DIF) in multiple-choice testing. The process is demonstrated on two multiple-choice tests that used complex alternatives (e.g., “No Mistakes”) as distractors. Comparisons were made between different gender and race groups. DIF analyses were conducted using Simultaneous Item Bias Test, whereas DDF analyses were conducted using loglinear model fitting and odds ratios. Five items made it through all three steps and were identified as those with DIF results related to DDF. Implications of the results, as well as suggestions for future research, are discussed.  相似文献   

19.
Differential item functioning (DIF) analyses are a routine part of the development of large-scale assessments. Less common are studies to understand the potential sources of DIF. The goals of this study were (a) to identify gender DIF in a large-scale science assessment and (b) to look for trends in the DIF and non-DIF items due to content, cognitive demands, item type, item text, and visual-spatial or reference factors. To facilitate the analyses, DIF studies were conducted at 3 grade levels and for 2 randomly equivalent forms of the science assessment at each grade level (administered in different years). The DIF procedure itself was a variant of the "standardization procedure" of Dorans and Kulick (1986) and was applied to very large sets of data (6 sets of data, each involving 60,000 students). It has the advantages of being easy to understand and to explain to practitioners. Several findings emerged from the study that would be useful to pass on to test development committees. For example, when there was DIF in science items, MC items tended to favor male examinees and OR items tended to favor female examinees. Compiling DIF information across multiple grades and years increases the likelihood that important trends in the data will be identified and that item writing practices will be informed by more than anecdotal reports about DIF.  相似文献   

20.
A 1998 study by Bielinski and Davison reported a sex difference by item difficulty interaction in which easy items tended to be easier for females than males, and hard items tended to be harder for females than males. To extend their research to nationally representative samples of students, this study used math achievement data from the 1992 NAEP, the TIMSS, and the NELS:88. The data included students in grades 4, 8, 10, and 12. The interaction was assessed by correlating the item difficulty difference (bmale− bfemale) with item difficulty computed on the combined male/female sample. Using only the multiple-choice mathematics items, the predicted negative correlation was found for all eight populations and was significant in five. An argument is made that this phenomenon may help explain the greater variability in math achievement among males as compared to females and the emergence of higher performance of males in late adolescence.  相似文献   

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