scholarly journals Die ontwerp van 'n werkmonstertoets vir die keuring van swart elektrisienambagmanhelpers

1985 ◽  
Author(s):  
J. B. Worfaardt
Keyword(s):  
Work Performance ◽  
Cross Validation ◽  
Rating Scale ◽  
Mining Industry ◽  
Work Sample ◽  
Job Experience ◽  
Sample Test ◽  
Selection Instrument ◽  
Improvement Score ◽  
Variance Explained

A work sample test, the Cable Joints Test, which could serve as a selection instrument for Black electrician aides in the mining industry was designed and applied with a rating scale as criterion. The predictors were scores on two testings with the work sample, an improvement score, Dudec and related job experience. A validation study (N=53) yielded low reliability coefficients and no significant correlation between predictors and criterion, but a cross validation (N=62) had shown that a combination of the second test score and Dudec combined could predict work performance. However, the multiple correlations (0,40 to 0,52) were low and the variance explained inadequate to be of any practical value in a selection battery.Opsomming'n Werkmonstertoets, die Kabellastoets, wat kan dien as keuringinstrument vir Swart elektrisiënambagmanhelpers in die mynbouindustrie is ontwerp en toegepas met 'n beoordeling- skaal as kriterium. Die voorspellers was tellings op twee toetsings met die werkmonster, 'n verbeteringtelling, Dudec en verwante werkervaring. 'n Valideringstudie (N=53) het lae betroubaarheidskoëffisiënte en geen betekenisvolle korrelasies tussen voorspellers en kriterium opgelewer nie, maar 'n kruisvalidering (N=62) het aangetoon dat 'n kombinasie van die tweede toetstelling en Dudec werkverrigting kan voorspel. Die meervoudige korrelasies (0,40 tot 0,52) was egter laag en die variansie wat verklaar word onvoldoende om van enige praktiese waarde in 'n keuringbattery te wees.

The Development and Cross Validation of Social Skills Rating Scale for Elementary Students

2017 ◽  
Vol 52 (3) ◽  
pp. 193-210
Author(s):  
Ae Hwa Kim ◽  
◽  
Ui Jung Kim ◽  
Hyun Skil Yoo ◽  
Eun Young Kang ◽  
...  
Keyword(s):  
Social Skills ◽  
Elementary Students ◽  
Cross Validation ◽  
Rating Scale

Spesialisasie binne die bedryfsielkunde

1985 ◽  
Author(s):  
I. Van W Raubenheimer
Keyword(s):  
Signal Detection ◽  
Personnel Selection ◽  
Signal Detection Theory ◽  
Work Performance ◽  
Job Analysis ◽  
Vigilance Task ◽  
Detection Theory ◽  
Industrial Psychology ◽  
High Degree ◽  
Selection Instrument

Personnel selection is carried out by the personnel psychologist/ personnel practitioner responsible for the supply of human resources. Selection models and -technology have been refined to a high degree and are scientifically acceptable. With regards to the identification of critical attributes on which selection is based, it is suggested in the study that job analysis be performed in the light of insights and knowledge gained in other branches of Industrial Psychology. Specifically the study shows that high and low work performance operators (N=25) involved in a a vigilance task, can be differentiated on the basis of signal detection theory. The results of the study (t-test for differences between means) suggest that selection in the situation investigated, should be based on the ability to discriminate between signals and not on the response bias of operators. The results also indicate that the task, based on signal detection theory, which was designed for the study, could be used as a selection instrument. OpsommingPersoneelkeuring setel gewoonlik by die personeelsiel-kundige/ personeelpraktisyn wat vir die voorsiening van menslike hulpbronne verantwoordelik is. Keuringsmodelle en –tegnologie is in 'n hoë mate verfyn en vakkundig verantwoordbaar. Ten opsigte van die identifisering van kritieke attribute op grond waarvan keuring plaasvind, word daar in die studie betoog dat daar aanvullend tot werkontleding ook op die kennis en insig wat in ander vertakkinge van die Bedryfsielkunde gegenereer word, gesteun moet word. In besonder word daar in die studie (N=25) aangetoon dat 'n onderskeid tussen hoë en lae werkprestasie-operateurs, gemoeid met 'n waaksaamheidstaak, op grond van seinbespeuringsteorie gemaak kan word. Uit die resultate van die studie (t-toets vir gemiddeldes) blyk dit dat keuring in die betrokke situasie op diskriminasievermoë en nie op responsievooroordeel nie, afgestem behoort te word en dat die taak, voortspruitend uit seinbespeuringsteorie wat vir die studie ontwerp was, as keuringsinstrument gebruik kan word.

A Human-Centered Approach to the Redesign of a Bitumen Trailer

2020 ◽  
Vol 29 (1) ◽  
pp. 4-13
Author(s):  
Sara Pazell ◽  
Robin Burgess-Limerick
Keyword(s):  
Travel Time ◽  
Design Process ◽  
Work Performance ◽  
Mining Industry ◽  
Design Philosophy ◽  
Electric Heat ◽  
In Transit ◽  
Reduced Risk

An electric heat-in-transit tanker (bitumen trailer) revolutionized the operation and design of bituminous tankers. It was developed using human-centered approaches and design philosophy, concepts, methods, and tools previously used in the mining industry. Task-based analysis was useful to contextualize opportunities and hazards. The new tanker improved efficiency in transit, reduced risk for exposure to hot bituminous product, improved access, reduced on-road travel time and risk for fatigue, optimized work performance, and challenged regulators to redefine safe transit requirements. The design process was opportunity based and highlighted the need to shift philosophy to consider performance-based needs of operators, not just equipment.

scholarly journals The association between values and performance in a mining corporation. Empirical study and insights for Managing by Values (MBV) model

2017 ◽  
Vol 33 (2) ◽  
pp. 145-164
Author(s):  
Anita Zbieg ◽  
Jan Kudełko ◽  
Agata Juzyk ◽  
Leszek Zaremba
Keyword(s):  
Organizational Culture ◽  
Empirical Study ◽  
Work Performance ◽  
Statistical Significance ◽  
Work Satisfaction ◽  
Mining Industry ◽  
Assessment Instrument ◽  
Research Results ◽  
General Management ◽  
And Performance

Abstract The paper presents result of an empirical study in which presence of values among workers of two mining squads characterized by different level of work performance has been compared. Values have been measured by two scales: Mining Values Scale (MVS) and Organizational Culture Assessment Instrument (OCAI). The squad with higher performance had significantly higher level of five out of nine values measured by (MVS); while none of the values measured by OCAI have been differentiating the squads with a statistical significance. The results suggest that Managing by Values (MBV) model for a mining corporation should rather be based on values specific for the mining industry rather than general management value set proposed by OCAI. Research results suggest also an association between presence of certain values and work satisfaction among workers.

Factorial Assessment of Rated Work Performance with Entry Level Psychiatric Aides

1986 ◽  
Vol 59 (2) ◽  
pp. 479-482 ◽  
Author(s):  
M. K. Distefano ◽  
Margaret W. Pryer
Keyword(s):  
Factor Analysis ◽  
Work Performance ◽  
Rating Scale ◽  
Components Of Variance ◽  
Record Keeping ◽  
Entry Level ◽  
Therapeutic Interaction ◽  
Work Habits ◽  
Factor Ii ◽  
Selection Test

A principal-components factor analysis of a 54-item work-performance rating scale with 173 entry-level psychiatric aides yielded three interpretable factors, Factor I: charting, record-keeping, and basic nursing care, Factor II: general work habits and compliance with rules, and Factor III: therapeutic interaction with patients. Comparisons of factorial and conceptual scoring methods yielded no differences in verbal-selection test/work-performance validities and no race or sex differences using either method. It was noted, however, that the use of factor analysis contributed to the construct validity of the scale and identified the major components of variance.

scholarly journals Comparing Rating Scales of Different Lengths: Equivalence of Scores from 5-Point and 7-Point Scales

1997 ◽  
Vol 80 (2) ◽  
pp. 355-362 ◽  
Author(s):  
Andrew M. Colman ◽  
Claire E. Norris ◽  
Carolyn C. Preston
Keyword(s):  
Public Transport ◽  
Rating Scales ◽  
Cross Validation ◽  
Linear Equations ◽  
Retail Store ◽  
Least Squares Regression ◽  
Power Functions ◽  
Data Set ◽  
Self Administered Questionnaire ◽  
Variance Explained

Using a self-administered questionnaire, 227 respondents rated service elements associated with a restaurant, retail store, or public transport company on several 5-point and 7-point rating scales. Least-squares regression showed that linear equations for estimating 7-point from 5-point and 5-point from 7-point ratings explained over 85% of the variance and fitted the data almost as well as higher-order polynomials and power functions. In a cross-validation on a new data set the proportion of variance explained fell to about 76%. Functionally inverse versions of the derived linear equations were calculated for the convenience of researchers and psychometricians.

Effectiveness of long-acting aripiprazole in schizoaffective disorders: A naturalistic longitudinal study

2017 ◽  
Vol 41 (S1) ◽  
pp. S757-S757
Author(s):  
A. Nivoli ◽  
M. Antonioli ◽  
L. Folini ◽  
L. Floris ◽  
G. Meli ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Schizoaffective Disorder ◽  
Rating Scale ◽  
Psychiatric Clinic ◽  
Significant Difference ◽  
Sample Test ◽  
Competing Interest ◽  
Long Acting ◽  
Over Time

IntroductionIntramuscular paliperidone palmitate (PP) is a long-acting, atypical anti-psychotic for once monthly intramuscular (IM) administration in the treatment of patients with schizophrenia.ObjectiveTo study the effectiveness (efficacy and quality of life) of ARP in the maintenance treatment of schizoaffective disorder.MethodsA non-randomized, prospective naturalistic study was performed in out-patients with schizoaffective disorder unsuccessfully treated with oral anti-psychotics. Efficacy of ARP over time was evaluated by using brief psychiatric rating scale (BPRS 24-items), quality of life was evaluated by using QL-Index, both at T0 and at most recent visit (T1). Data were analyzed with Student's t-tests and Pearson correlations (α value, two tailed). Paired t-test was applied for BPRS and for Ql-Index total scores (T0–T1).ResultsData were available for 8 outpatients consecutively prescribed ARP and naturalistically treated attending at the psychiatric clinic, university of Sassari. Mean time on ARP treatment was 207.14 days (sd 137.2). BPRS mean total score at T0 was 57 (sd 13.2) and at T1 was 39.7 (sd 10.8). QL-Index mean total score was at T0 5.43 (sd 1.6) and at T1 7.14 (sd 2.7). Paired sample test showed a statistically significant difference in decreasing symptoms at BPRS over time (P = 0.001) and QL-Index total score (P = 0.023). The analyses showed a significant improving at the following BPRS sub-items: anxiety (P = 0.005), mood elevation (P = 0.014) conceptual disorganization (P = 0.048), emotional withdrawal (P = 0.05), tension (P = 0.02) and distractibility (P = 0.03).Disclosure of interestThe authors have not supplied their declaration of competing interest.

scholarly journals Prediction Model for Potential Depression using Sex and Age-reflected qEEG Biomarkers.

2021 ◽  
Author(s):  
Taehyoung Kim ◽  
Ukeob Park ◽  
Seung Wan Kang
Keyword(s):  
Data Center ◽  
Cross Validation ◽  
Rating Scale ◽  
Modern Society ◽  
Classification Model ◽  
Test Accuracy ◽  
Z Score ◽  
Fold Cross Validation ◽  
Commit Suicide ◽  
Machine Learning Models

Abstract Depression is the mental disorder that prevalent in modern society, causing many people to suffer or even commit suicide. Psychiatrists and psychologists typically diagnose depression using representative tests such as the Beck’s Depression Inventory (BDI) and the Hamilton Depression Rating Scale (HDRS) in conjunction with patient consultations. Traditional tests, however, are time consuming, can be trained on patients, and entail a lot of clinician subjectivity. In the present study, we trained the machine learning models using sex and age-reflected z-score values of QEEG indicators based on data from Data Center for Korean EEG with 116 potential depression subjects and 80 healthy controls. The classification model distinguished potential depression groups and normal groups with a test accuracy of up to 92.31% and a 10-fold cross validation loss of 0.13. This performance proposes a model with z-score QEEG metrics considering sex and age as an objective and a reliable method for detecting potential depression.

Cross-Validation and Application of a Scale Assessing School Band Performance

2020 ◽  
pp. 002242942095178
Author(s):  
Emily G. Rossin ◽  
Martin J. Bergee
Keyword(s):  
High School ◽  
Field Test ◽  
Cross Validation ◽  
Rating Scale ◽  
Concert Band ◽  
Interrater Agreement ◽  
Tone Quality ◽  
Primary Order ◽  
Good Internal Consistency ◽  
School Band

This is the sixth and culminating study in a series whose purpose has been to acquire a conceptual understanding of school band performance and to develop an assessment based on this understanding. With the present study, we cross-validated and applied a rating scale for school band performance. In the cross-validation phase, college students rated recordings of two high school concert band performances using a scale developed for mid-level band performance. The result was a 25-item School Band Performance Rating Scale (SBPRS) for use at middle and high school levels. Consistent with previous research, the scale was unidimensional, containing one strong second-order factor and three distinct primary-order factors: Rhythm–Technique, Tone Quality–Intonation, and Expressiveness–Musicianship. The scale demonstrated good internal consistency. In a field test, adjudicators used an online version of the SBPRS to assess school band performances. The online form allowed adjudicators to view other adjudicators’ ratings in real time. Good interrater agreement resulted. In another field test, judges used a nonlive version of the SBPRS, and lower interrater agreement resulted. The SBPRS reflects the conceptual structure of school band performance and can be applied advantageously to serve adjudicators and school band ensembles.

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