Performance Evaluation Tests for Environmental Research (Peter): Wonderlic Personnel Test

1982 ◽  
Vol 51 (2) ◽  
pp. 635-644 ◽  
Author(s):  
S. L. Mackaman ◽  
A. C. Bittner ◽  
M. M. Harbeson ◽  
R. S. Kennedy ◽  
D. A. Stone
Keyword(s):  
Performance Evaluation ◽  
High School Graduates ◽  
Environmental Research ◽  
Standard Score ◽  
Enlisted Men ◽  
Task Definition ◽  
Parallel Forms ◽  
The Mean ◽  
Definition Of ◽  
Personnel Test

To ascertain the suitability of the Wonderlic Personnel Test for inclusion in a battery of Performance Evaluation Tests for Environmental Research (PETER) parallel forms were administered daily, without coaching or feedback, for 19 consecutive work days to 13 Navy enlisted men who were high school graduates. Over Days 1 to 10 and 18 to 19, unique forms were administered; forms were repeated over Days 11 to 17. The mean score significantly increased from about 23 to 29 amounting to 0.7 standard score units. Subsequent to Day 4, the change in performance was linear and accounted for 57% of the Days 5 to 19 variation. The standard deviations were homogeneous over all repeated and unrepeated days, and the reliability correlations were differentially stable across all days, with a task definition of r = .70. The group mean increase of more than 21 percentile points on the Wonderlic has implications for selection and counseling. It is noteworthy that the average subject in our group scored equal to “stenographer” or “draftsman” on the first occasion but typical of “engineer” or “accountant” on the last. It was concluded that the Wonderlic is suitable for inclusion in PETER.

Performance Evaluation Tests for Environmental Research (Peter): Evaluation of 114 Measures

1986 ◽  
Vol 63 (2) ◽  
pp. 683-708 ◽  
Author(s):  
Alvah C. Bittner ◽  
Robert C. Carter ◽  
Robert S. Kennedy ◽  
Mary M. Harbeson ◽  
Michele Krause
Keyword(s):  
Performance Evaluation ◽  
Repeated Measures ◽  
Time Course ◽  
Environmental Studies ◽  
Acceptable Level ◽  
Environmental Research ◽  
Human Capabilities ◽  
Task Definition ◽  
And Task

The goal of the Performance Evaluation Tests for Environmental Research (PETER) Program was to identify a set of measures of human capabilities for use in the study of environmental and other time-course effects. 114 measures studied in the PETER Program were evaluated and categorized into four groups based upon task stability and task definition. The Recommended category contained 30 measures that clearly obtained total stabilization and had an acceptable level of reliability efficiency. The Acceptable-But-Redundant category contained 15 measures. The 37 measures in the Marginal category, which included an inordinate number of slope and other derived measures, usually had desirable features which were outweighed by faults. The 32 measures in the Unacceptable category had either differential instability or weak reliability efficiency. It is our opinion that the 30 measures in the Recommended category should be given first consideration for environmental research applications. Further, it is recommended that information pertaining to preexperimental practice requirements and stabilized reliabilities should be utilized in repeated-measures environmental studies.

Development of Performance Evaluation Tests for Environmental Research (Peter): Arithmetic Computation

1980 ◽  
Vol 51 (3_suppl2) ◽  
pp. 1023-1031 ◽  
Author(s):  
D. M. Seales ◽  
R. S. Kennedy ◽  
A. C. Bittner
Keyword(s):  
Performance Evaluation ◽  
Environmental Research ◽  
Simple Arithmetic ◽  
Task Definition ◽  
Baseline Testing ◽  
Differential Stability ◽  
Paper And Pencil ◽  
Arithmetic Computation

A paper-and-pencil test of simple arithmetic ability was exceptionally well suited for inclusion in a battery of Performance Evaluation Tests for Environmental Research (PETER). Mean performance stabilized after nine days of baseline testing. Variance was constant throughout 15 days of baseline testing. “Task definition” was high, and “differential stability” was present from the outset. Subjects apparently came to this test with well established differential levels of arithmetic ability.

Comparison of Memory Tests for Environmental Research

1980 ◽  
Vol 24 (1) ◽  
pp. 349-353 ◽  
Author(s):  
Mary M. Harbeson ◽  
Michele Krause ◽  
Robert S. Kennedy
Keyword(s):  
Human Performance ◽  
Performance Test ◽  
Present Form ◽  
Test Battery ◽  
Environmental Research ◽  
Memory Research ◽  
Memory Tests ◽  
Enlisted Men ◽  
Task Definition ◽  
Statistical Criteria

Four memory tests were considered for inclusion in a human performance test battery. The tests were administered to 23 Navy enlisted men for 15 consecutive days. Group means, standard deviations, and cross-session correlations were examined. Two of the tests, Interference Susceptibility and Free Recall, met the initial statistical criteria for inclusion in the test battery. However, the other tests, Running Recognition and List Differentiation failed to show sufficient task definition and reliability in their present form. These tests are compared with each other and with previous memory research studies.

Development of Performance Evaluation Tests for Environmental Research (PETER): Arithmetic Computation

1979 ◽  
Vol 23 (1) ◽  
pp. 508-512 ◽  
Author(s):  
D. M. Seales ◽  
R. S. Kennedy ◽  
A. C. Bittner
Keyword(s):  
Performance Evaluation ◽  
Environmental Research ◽  
Simple Arithmetic ◽  
Task Definition ◽  
Baseline Testing ◽  
Differential Stability ◽  
Paper And Pencil ◽  
Arithmetic Computation

A paper-and-pencil test of simple arithmetic ability was found to be exceptionally well suited for inclusion in a battery of Performance Evaluation Tests for Environmental Research (PETER). Mean performance stabilized after nine days of baseline testing. Variance was constant throughout fifteen days of baseline testing. “Task definition” was high, and “differential stability” was present from the outset. Subjects apparently came to this test with well established differential levels of arithmetic ability.

Performance Evaluation Tests for Environmental Research (PETER): The Good, Bad, and Ugly

1984 ◽  
Vol 28 (1) ◽  
pp. 11-15 ◽  
Author(s):  
A. C. Bittner ◽  
R. C. Carter ◽  
R. S. Kennedy ◽  
M. M. Harbeson ◽  
M. Krause
Keyword(s):  
Performance Evaluation ◽  
Repeated Measures ◽  
Time Course ◽  
Environmental Research ◽  
Task Definition ◽  
Baseline Conditions ◽  
Joint Consideration ◽  
And Task

The goal of the Performance Evaluation Tests for Environmental Research (PETER) Program was to identify a set of measures of human cognitive, perceptual, and motor capabilities for use in the study of environmental and other time-course effects. Tasks were evaluated as suitable for repeated measures applications when their intertrial means, variances and correlations were well-behaved under constant baseline conditions. This report provides an evaluation of 112 test measures studied in the program. They are categorized into four groups based upon joint consideration of task stability and task definition. Thirty test measures were categorized as Good, 15 as Good-But-Redundant, 35 as Ugly (flawed), and 32 as Bad.

Performance Evaluation Tests for Environmental Research (PETER): Auditory Digit Span Task

1980 ◽  
Vol 24 (1) ◽  
pp. 330-334 ◽  
Author(s):  
Denise B. McCafferty ◽  
Alvah C. Bittner ◽  
Robert C. Carter
Keyword(s):  
Performance Evaluation ◽  
Repeated Measures ◽  
Digit Span ◽  
Sufficient Conditions ◽  
Mental Content ◽  
Repeated Measurements ◽  
Environmental Research ◽  
Repeated Measures Analysis ◽  
The Mean ◽  
Differential Stability

Auditory digit span was evaluated as an instrument for repeated measurements experimentation. Twelve subjects were tested for one hour on each of 12 consecutive workdays in a standard environment. Both forward and backward digit span were measured. It was found that forward digit span was suitable for repeated measures after ten days of practice at 30 minutes per day. The criteria for suitability were predictability of the mean scores, constancy of the standard deviations and differential stability of the intertrial correlations. These criteria are sufficient conditions both for repeated measures Analysis of Variance, and for interpretation of experimental effects. Although the backward digit span scores did not meet these criteria, they became more and more correlated with the forward digit span scores as the experiment progressed. This indicates that the mental content of the two tests of memory converged with practice. One implication of this finding is to question the meaningfulness of factor structure after only limited practice. The forward auditory digit span test was recommended for inclusion in a battery of Performance Evaluation Tests for Environmental Research (PETER).

A Catalogue of Performance Evaluation Tests for Environmental Research

1980 ◽  
Vol 24 (1) ◽  
pp. 344-348 ◽  
Author(s):  
Robert S. Kennedy ◽  
Robert C. Carter ◽  
Alvah C. Bittner
Keyword(s):  
Performance Evaluation ◽  
Repeated Measures ◽  
Environmental Research ◽  
Stability Criteria ◽  
Present Program ◽  
Task Definition ◽  
Stable Means ◽  
Administration Time ◽  
Research Findings ◽  
The Stability

Performance Evaluation Tests for Environmental Research (PETER) are under development at the Naval Biodynamics Laboratory and supporting organizations. The tests, or tasks, studied in this program have been largely derived from the literature. Each task was evaluated for suitability for repeated measures experimental designs which are almost universally used in environmental research. Suitability criteria included the “stability” of task means, standard deviations, and between-trial correlations. The magnitude of the “stabilized” between-trial correlations, task definition, was also examined with respect to the administration time. There are 60 active tasks in the present program. All tasks examined to date exhibit stable means and variances after adequate practice but: (a) less than 30% meet minimal stability criteria for intertrial correlations; and (b) substantial practice (typically more than an hour over five days) is required to achieve stability. A tabular catalogue of the research findings and background for 15 tasks is presented and discussed.

Performance Evaluation Tests for Environmental Research (PETER): Code Substitution Test.

1981 ◽  
Author(s):  
Ross L. Pepper ◽  
Robert S. Kennedy ◽  
Alvah C. Bittner ◽  
Steven F. Wiker
Keyword(s):  
Performance Evaluation ◽  
Environmental Research

Comparison of Fluorine(18)-fluorodeoxyglucose and Gallium(68)-citrate PET/CT in patients with tuberculosis

2019 ◽  
Vol 58 (05) ◽  
pp. 371-378
Author(s):  
Alfred O. Ankrah ◽  
Ismaheel O. Lawal ◽  
Tebatso M.G. Boshomane ◽  
Hans C. Klein ◽  
Thomas Ebenhan ◽  
...  
Keyword(s):  
Tracer Uptake ◽  
Pet Ct ◽  
The Mean ◽  
18F Fdg ◽  
Definition Of ◽  
Gallium 68 ◽  
Attending Physician ◽  
Pet Scans ◽  
The Brain

Abstract 18F-FDG and 68Ga-citrate PET/CT have both been shown to be useful in the management of tuberculosis (TB). We compared the abnormal PET findings of 18F-FDG- and 68Ga-citrate-PET/CT in patients with TB. Methods Patients with TB on anti-TB therapy were included. Patients had a set of PET scans consisting of both 18F-FDG and 68Ga-citrate. Abnormal lesions were identified, and the two sets of scans were compared. The scan findings were correlated to the clinical data as provided by the attending physician. Results 46 PET/CT scans were performed in 18 patients, 11 (61 %) were female, and the mean age was 35.7 ± 13.5 years. Five patients also had both studies for follow-up reasons during the use of anti-TB therapy. Thirteen patients were co-infected with HIV. 18F-FDG detected more lesions than 68Ga-citrate (261 vs. 166, p < 0.0001). 68Ga-citrate showed a better definition of intracerebral lesions due to the absence of tracer uptake in the brain. The mean SUVmax was higher for 18F-FDG compared to 68Ga-citrate (5.73 vs. 3.01, p < 0.0001). We found a significant correlation between the SUVmax of lesions that were determined by both tracers (r = 0.4968, p < 0.0001). Conclusion Preliminary data shows 18F-FDG-PET detects more abnormal lesions in TB compared to 68Ga-citrate. However, 68Ga-citrate has better lesion definition in the brain and is therefore especially useful when intracranial TB is suspected.

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