Robert A Forsyth
Biographic Data
| ID | 5181983 |
|---|---|
| NAME | Robert A Forsyth |
| GIVEN NAMES | Robert A |
| FAMILY NAME | Forsyth |
| SIGNATURE | FORSYTH R A |
| AFFILIATIONS | University of Iowa |
| VERIFIED | No |
| TOTAL WORKS | 17 |
| TOTAL CITATIONS | 0 |
| WORKS AS AUTHOR | 17 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1969 |
| LATEST PUBLICATION YEAR | 1998 |
| H-INDEX | 0 |
A Comparison of Four Imputation Procedures in a Two-Variable Prediction System
This study compared the effectiveness of four imputation procedures (mean, conditional mean, hot deck, and regression) in a two-variable prediction system. A total of 18,869 participants were included in the sample. Two data matrices containing missing values were created: one with randomly missing data and the other with nonrandomly missing data. Values were missing for only one of the two independent variables. The results of the study provide …
The Effects of Using Calculators to Reduce the Computational Burden on a Standardized Test of Mathematics Problem Solving
Problem solving is a key skill in mathematics education. Thus, it is important to be able to assess students' proficiencies as problem solvers. The Quantitative Thinking Subtest (Test Q) of the Iowa Tests of Educational Development is a test of problem solving ability. However, if this test is to be considered a pure measure of problem solving ability, it must be demonstrated that this test does not measure other factors such as computational abi…
The Effect of Deleting Content-Related Items on IRT Ability Estimates
In this study, the process a school might use to build a "customized test" from an "on shelf' standardized achievement test was followed, as closely as possible. The main purpose was to assess the effects of using "customized test" results rather than full test results in estimating examinee ability levels. To this end, ability parameters were estimated for groups of students on the Quantitative Thinking subtest of a standardized achievement test…
The One-, Two- and Modified Two-Parameter Latent Trait Models
Latent trait procedures are being proposed for use in the construction and scaling of standardized achievement tests. These procedures, however, usually require rather strong assumptions that will not be met in any absolute way for data from such tests. The primary purpose of this study was to compare the relative robustness of the one-, two- and modified two-parameter latent trait logistic models for one specific standardized test. Responses of …
Relationship of Elementary and Secondary School Achievement Test Scores to College Performance
This study investigated the relationship between achievement test scores on the ITBS and ITED and academic success in college. The basic population consisted of approximately 2000 students who entered the University of Iowa as freshmen in 1977. Achievement test scores obtained in grades 4, 6, 8, 9, 10, 11, and 12 were available for a substantial portion of the population. Three measures of academic success in college were used: (1) first semester…
The Importance of Computational Skill for Answering Items in a Mathematics Problem Solving Test
The primary purpose of this study was to investigate the importance of computational skill for answering items in the Quantitative Thinking subtest (Test Q) of the Iowa Tests of Educational Development (ITED). Nine matched pairs of schools participated in the study. One school from each pair allowed students to use calculators when taking Test Q, while the other school did not allow calculators to be employed. The difficulty levels of the items i…
Relationship of Elementary and Secondary School Achievement Test Scores To Later Academic Success
This study investigated the relationship between achievement test scores on the ITBS and ITED and academic success (high school and college grade point average). The basic population consisted of approximately 2000 students who entered the University of Iowa as freshmen in 1977. Scores on high school achievement tests adminis tered in grades 9, 10, 11, and 12 and on elementary achievement tests administered in grades 4, 6, and 8 were obtained for…
Perceived Mental Illness and Diminished Responsibility
Subjects read case reports of an accident, in which the severity of consequences was varied, and where the protagonist was described as “normal” or as exhibiting “symptoms” of alcohol abuse, paranoid delusions, acute anxiety. Although greater mental illness was perceived in the alcoholism and paranoid cases, greater responsibility was also attributed to the alcoholic, and more severe penalties were recommended in both cases. Greater responsibilit…
Construction and Validation of an Instrument Measuring Certain Attitudes toward Mathematics
The purpose of this study was to develop scales measuring four facets of attitude toward mathematics and to assess the reliability and validity of these scales. The four constructs of interest were: enjoyment of word problems; enjoyment of pictorial problems; appreciation of the utility of mathematics; and security with mathematics. The scales designed to measure these four constructs were administered to 299 seventh grade students. Split-half re…
Estimating Means Via Multiple Matrix Sampling
In this paper, Shoemaker's (1972, 1973b) conclusions related to the influence of various data base characteristics (reliability, variability of item difficulty indices, and degree of skewness in the normative distribution) on the standard error of a mean estimated via Multiple Matrix Sampling (MMS) procedures are examined. It is noted that these conclusions are true under fairly restrictive conditions. Also, it is shown that even under these cond…
The Use of Multiple Matrix Sampling to Approximate Norms Distributions
Multiple matrix sampling (MMS) procedures were utilized to determine the necessary parameters of a Pearson Type I curve. Empirical norms distributions were approximated by both the Type I model and the negative hypergeometric model. Four existing ITED norms distributions, two subtests and two grades, were approximated by the MMS procedures. Two sampling designs for each test-grade combination were studied. Comparison of approximations obtained fo…
Approximating Standardized Achievement Test Norms With a Theoretical Model
This study was undertaken to answer the following research question: Can standardized achievement test norms be better estimated with a theoretical probability model other than the negative hypergeometric model? Ninety norms distributions from two standardized achievement test batteries (ITBS and ITED) were fitted by six models. The results strongly supported the Pearson Type I model (four moments) as the best-fitting curve. It was concluded that…
Comparative Parental MMPI Protocols of Children Evaluated at a Child Development Clinic
All parents completed an MMPI upon evaluation of their child at a clinic before diagnosis. For this study, 144 pairs of parents were selected to reflect the sex ratio of the clinic population. This sample was divided into three groups according to the diagnostic classification of the child: (1) minimal cerebral dysfunction, (2) behavior disorder, and (3) normal child. Separate multivariate analyses, computed for the groups by comparing the mean M…
An Empirical Note on Correlation Coefficients Corrected for Restriction in Range
Some Theoretical and Empirical Results Related to McNemar's Test that the Population Correlation Coefficient Corrected for Attenuation Equals 1.0
An Investigation of Empirical Sampling Distributions of Correlation Coefficients Corrected for Attenuation
Differential Measurement of Reading Abilities at the Elementary School Level
INVESTIGATES the extent to which different types of reading subtests measure unique aspects of reading comprehension. Eight reading sub-tests plus selected sub-tests of the Iowa Tests of Basic Skills were adapted for use in an experimental test battery. The sub-tests, organized into two half-length forms, were administered one-week apart to 513 fifth-grade pupils. Sub-test intercorrelations were corrected for attenuation and the reliabilities of …
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An Investigation of Empirical Sampling Distributions of Correlation Coefficients Corrected for Attenuation
Differential Measurement of Reading Abilities at the Elementary School Level
INVESTIGATES the extent to which different types of reading subtests measure unique aspects of reading comprehension. Eight reading sub-tests plus selected sub-tests of the Iowa Tests of Basic Skills were adapted for use in an experimental test battery. The sub-tests, organized into two half-length forms, were administered one-week apart to 513 fifth-grade pupils. Sub-test intercorrelations were corrected for attenuation and the reliabilities of …
Some Theoretical and Empirical Results Related to McNemar's Test that the Population Correlation Coefficient Corrected for Attenuation Equals 1.0
An Empirical Note on Correlation Coefficients Corrected for Restriction in Range
The Use of Multiple Matrix Sampling to Approximate Norms Distributions
Multiple matrix sampling (MMS) procedures were utilized to determine the necessary parameters of a Pearson Type I curve. Empirical norms distributions were approximated by both the Type I model and the negative hypergeometric model. Four existing ITED norms distributions, two subtests and two grades, were approximated by the MMS procedures. Two sampling designs for each test-grade combination were studied. Comparison of approximations obtained fo…
Approximating Standardized Achievement Test Norms With a Theoretical Model
This study was undertaken to answer the following research question: Can standardized achievement test norms be better estimated with a theoretical probability model other than the negative hypergeometric model? Ninety norms distributions from two standardized achievement test batteries (ITBS and ITED) were fitted by six models. The results strongly supported the Pearson Type I model (four moments) as the best-fitting curve. It was concluded that…
Comparative Parental MMPI Protocols of Children Evaluated at a Child Development Clinic
All parents completed an MMPI upon evaluation of their child at a clinic before diagnosis. For this study, 144 pairs of parents were selected to reflect the sex ratio of the clinic population. This sample was divided into three groups according to the diagnostic classification of the child: (1) minimal cerebral dysfunction, (2) behavior disorder, and (3) normal child. Separate multivariate analyses, computed for the groups by comparing the mean M…
Estimating Means Via Multiple Matrix Sampling
In this paper, Shoemaker's (1972, 1973b) conclusions related to the influence of various data base characteristics (reliability, variability of item difficulty indices, and degree of skewness in the normative distribution) on the standard error of a mean estimated via Multiple Matrix Sampling (MMS) procedures are examined. It is noted that these conclusions are true under fairly restrictive conditions. Also, it is shown that even under these cond…
Construction and Validation of an Instrument Measuring Certain Attitudes toward Mathematics
The purpose of this study was to develop scales measuring four facets of attitude toward mathematics and to assess the reliability and validity of these scales. The four constructs of interest were: enjoyment of word problems; enjoyment of pictorial problems; appreciation of the utility of mathematics; and security with mathematics. The scales designed to measure these four constructs were administered to 299 seventh grade students. Split-half re…
Relationship of Elementary and Secondary School Achievement Test Scores To Later Academic Success
This study investigated the relationship between achievement test scores on the ITBS and ITED and academic success (high school and college grade point average). The basic population consisted of approximately 2000 students who entered the University of Iowa as freshmen in 1977. Scores on high school achievement tests adminis tered in grades 9, 10, 11, and 12 and on elementary achievement tests administered in grades 4, 6, and 8 were obtained for…
Perceived Mental Illness and Diminished Responsibility
Subjects read case reports of an accident, in which the severity of consequences was varied, and where the protagonist was described as “normal” or as exhibiting “symptoms” of alcohol abuse, paranoid delusions, acute anxiety. Although greater mental illness was perceived in the alcoholism and paranoid cases, greater responsibility was also attributed to the alcoholic, and more severe penalties were recommended in both cases. Greater responsibilit…
The Importance of Computational Skill for Answering Items in a Mathematics Problem Solving Test
The primary purpose of this study was to investigate the importance of computational skill for answering items in the Quantitative Thinking subtest (Test Q) of the Iowa Tests of Educational Development (ITED). Nine matched pairs of schools participated in the study. One school from each pair allowed students to use calculators when taking Test Q, while the other school did not allow calculators to be employed. The difficulty levels of the items i…
Relationship of Elementary and Secondary School Achievement Test Scores to College Performance
This study investigated the relationship between achievement test scores on the ITBS and ITED and academic success in college. The basic population consisted of approximately 2000 students who entered the University of Iowa as freshmen in 1977. Achievement test scores obtained in grades 4, 6, 8, 9, 10, 11, and 12 were available for a substantial portion of the population. Three measures of academic success in college were used: (1) first semester…
The One-, Two- and Modified Two-Parameter Latent Trait Models
Latent trait procedures are being proposed for use in the construction and scaling of standardized achievement tests. These procedures, however, usually require rather strong assumptions that will not be met in any absolute way for data from such tests. The primary purpose of this study was to compare the relative robustness of the one-, two- and modified two-parameter latent trait logistic models for one specific standardized test. Responses of …
The Effect of Deleting Content-Related Items on IRT Ability Estimates
In this study, the process a school might use to build a "customized test" from an "on shelf' standardized achievement test was followed, as closely as possible. The main purpose was to assess the effects of using "customized test" results rather than full test results in estimating examinee ability levels. To this end, ability parameters were estimated for groups of students on the Quantitative Thinking subtest of a standardized achievement test…
The Effects of Using Calculators to Reduce the Computational Burden on a Standardized Test of Mathematics Problem Solving
Problem solving is a key skill in mathematics education. Thus, it is important to be able to assess students' proficiencies as problem solvers. The Quantitative Thinking Subtest (Test Q) of the Iowa Tests of Educational Development is a test of problem solving ability. However, if this test is to be considered a pure measure of problem solving ability, it must be demonstrated that this test does not measure other factors such as computational abi…
A Comparison of Four Imputation Procedures in a Two-Variable Prediction System
This study compared the effectiveness of four imputation procedures (mean, conditional mean, hot deck, and regression) in a two-variable prediction system. A total of 18,869 participants were included in the sample. Two data matrices containing missing values were created: one with randomly missing data and the other with nonrandomly missing data. Values were missing for only one of the two independent variables. The results of the study provide …
Mathematics (12 works) · Psychology (12 works) · Statistics (9 works) · Computer Science (7 works) · Econometrics (7 works) · Mathematics education (7 works) · Developmental psychology (6 works) · Test (biology) (6 works) · Achievement test (5 works) · Standardized test (5 works)