Psychology Commons^™

Methods Of Detecting Differential Item Functioning: A Comparison Of Item Response Theory And Confirmatory Factor Analysis, Ratchaneewan Wanichtanom

Psychology Theses & Dissertations

Differential item functioning (DIF) occurs when an item performs statistically differently for a reference group than for a focal group. DIF is a threat to the validity of a test, and it can lead to illegal usage of a test in situations such as employee selection. Thus, DIF has important implications for test construction and practice. This research is a Monte Carlo study that compares Item Response Theory (IRT) and three Confirmatory Factor Analysis (CFA) methods for detecting DIF. The three CFA methods were Model Comparison (MC), Modification Indexes (MI), and Modification Indexes-Divided sample (MI-Divided).

The research compared the detection …

Perceptual Cues And Subjective Organization In A Virtual Information Workspace, Todd M. Eischeid

Psychology Theses & Dissertations

The key to effectively using the immense body of data on the Internet is an efficient method of organizing relevant information. Researchers and designers are beginning to promote the advantages of three-dimensional (3D) models of information storage and retrieval; however, the potential benefits of perceptual depth cues have not been systematically studied.

The present study used a computer task to examine the effectiveness of three types of virtual desktops. A two-dimensional (2D) virtual desktop display, lacking in the cues that give the illusion of depth, was compared to two different 3D virtual desktops, both of which used perceptual cues to …

The Relationship Between Workplace Absenteeism And Alcohol Use: A Day-To-Day Examination, Susan Kay Mcfarlin

Psychology Theses & Dissertations

This investigation examined the conditional day-to-day relationship between alcohol use and workplace absenteeism among participants (N = 302) employed full-time in one of three large companies located in the northeastern U.S. Semi-structured interviews were used to gather information from employees on their daily use of alcohol and other drugs during a 1-month period. Employees' absenteeism and work injury data during the same target time period were gathered from personnel files residing in the companies' human resources departments. The presence of a current alcohol use disorder also was determined. The following primary hypotheses were tested: (a) there would be a …

Effects Of Organizational Climate, Feedback-Seeking Environment And Innovation Characteristics On The Implementation Of A 360-Degree Feedback System, Simon Alan Bartle

Psychology Theses & Dissertations

The present study examined the effects of organizational climate, feedback seeking environment and innovation characteristics on the implementation of a 360-degree feedback system within a large financial holdings company. The effect of user attitudes toward the 360-degree feedback system was also assessed. A sample of responses from 255 360-degree feedback system users was collected over a 14-month time period. LISREL was used to test the hypothesized structural model. Overall goodness of fit for the model was poor (using generalized least squares estimates: the Non-Normed Fit Index (NNFI) = .95, Comparative Fit Index (CFI) = .96; Root Mean Square Error of …