This study compares the psychometric utility of Classical Test Theory (CTT) and Item Response Theory (IRT) for scale construction with data from higher education student surveys. Using 2008 Your First College Year (YFCY) survey data from the Cooperative Institutional Research Program at the Higher Education Research Institute at UCLA, two scales are built and tested—one measuring social involve...

Historically, reliability issues in psychology and education have been addressed principally using classical test theory (CTT), which postulates that an observed score can be decomposed into a “true” score and a single, undifferentiated random error term, E (Feldt & Brennan, 1989). Generalizability (G) theory liberalizes CTT by providing models and methods that allow an investigator to disentan...

In this article we study networks of coupled dynamical systems with time-delayed connections. If two such networks hold different delays on the connections it is in general possible that they exhibit different dynamical behavior as well. We prove that for particular sets of delays this is not the case. To this aim we introduce a componentwise timeshift transformation (CTT) which allows to class...

In long-term evolution, the service area is partitioned into several tracking areas (TAs), which comprise one or more cells (the radio coverages of base stations). The TAs are grouped into TA list (TAL). When an incoming call arrives, the network attempts to connect to the user equipment (UE) by paging the cells in the UE’s TAL, which may incur large paging traffic that significantly consumes t...

Human immunodeficiency virus type 1 (HIV-1) is the etiological agent of acquired syndrome (AIDS), a pandemic with high economic and social costs. The envelope glycoprotein (env) mediates infectious process by binding to entering host cell, one main target components studies since its discovery. Its endodomain or C-terminal tail (CTT) participates in late replicative cycle processes, such as int...

Aim: Constipation is a problem faced by many children around the world. There are different ways of diagnosis and management this condition. The key to right based on series investigation that differs with children. subject interest often amount time it takes for substance move through colon which known as Colon Transit Time [CTT]. transit study or radio-opaque marker [ROM] otherwise pellet one...

IRT and HR assessment 1. _______ __________________ Abstract. – The use of assessments in employee selection-and corporate spending on these services-continues to rise. Traditionally, HR assessments are constructed and validated using Classical Test Theory (CTT). Unfortunately, CTT neither provides state-of-the-art measurement nor guarantees to meet legal requirements, since it does not yield i...

Angiogenesis is required for tumor growth and metastasis, and targeting angiogenesis is a novel anticancer strategy. However, cancer development is a complex multistep process, and single antiangiogenic agents have limited therapeutic efficacy. Here, we report a triple fusion protein, namely CTT peptide-endostatin mimic-kringle 5 (AARP), consisting of MMP-2/9-selective inhibitory peptide (CTT p...

OBJECTIVE The Trail making test (TMT) is culture-loaded because of reliance on the Latin alphabet, limiting its application in Eastern populations. The Shape Trail Test (STT) has been developed as a new variant. This study is to examine the applicability of the STT in a senile Chinese population and to evaluate its potential advantages and disadvantages. METHOD A total of 2470 participants we...