نتایج جستجو برای: reliability test

تعداد نتایج: 926429  

Journal: :CoRR 2007
Zoltán Szucs Márta Rencz

In this paper we present a novel method for reliability testing of MEMS devices containing movable structures. A small size, simple and cheap vibration fatigue test equipment was designed and realized at BUTE and vibration fatigue tests were carried out on 10 samples of a LIS0L02AS4-type MEMS 3-axis inertial sensor provided by ST Microelectronics. The paper presents the test plan, the test equi...

Journal: :Journal of physical activity & health 2010
Suzie Mudge Denise Taylor Oliver Chang Rosita Wong

BACKGROUND Activity Monitors give an objective measure of usual walking performance. This study aimed to examine the test-retest reliability of the StepWatch Activity Monitor outputs (mean steps/day; peak activity index; sustained activity indices of 1, 5, 20, 30, 60 minutes; steps at high, medium, and low stepping rates). METHODS Thirty healthy adults age 18 to 49 years wore the StepWatch fo...

Journal: :Archives of clinical neuropsychology : the official journal of the National Academy of Neuropsychologists 2013
Philip Schatz Charles S Ferris

In order to better understand the test-retest reliability of the ImPACT test battery, 25 undergraduate students completed two ImPACT tests across a time frame of 4 weeks between assessments. Participants had not previously completed ImPACT and had no history of concussion. Pearson's correlation coefficients (r) and intraclass correlation coefficients (ICCs) were as follows: Verbal Memory = .66/...

Journal: :Psychometrika 1945
L GUTTMAN

Three sources of variation in experimental results for a test are distinguished: trials, persons, and items. Unreliability is defined only in terms of variation over trials. This definition leads to a more complet~ analysis than does the conventional one; Spearman’s contention is verified that the conventional approach--which was formulated by Yule--introduces unnecessary hypotheses. It is emph...

Journal: :Perceptual and motor skills 1995
P Klavora P Gaskovski R D Forsyth

The test-retest reliability of three Dynavision tasks of graded difficulty was estimated as high, with intraclass R correlation coefficients ranging from .88 to .97, and paired correlation coefficients ranging from .74 to .92. Recommendations are made for reliable testing procedures.

Journal: :Psychophysiology 2005
Christine L Larson Dante Ruffalo Jennifer Y Nietert Richard J Davidson

Following reports on improved test-retest reliability of emotion-modulated startle during a 6-s picture presentation when different pictures are presented at each assessment (Larson et al., 2000) and data suggesting that brief picture presentations also elicit affective blink modulation (Codispoti, Bradley, & Lang, 2001), we assessed test-retest reliability of blink modulation during brief pict...

Journal: :Personality and individual differences 2015
Patricia H Miller Suzanne D Baxter Julie A Royer David B Hitchcock Albert F Smith Kathleen L Collins Caroline H Guinn Alyssa L Smith Megan P Puryear Kate K Vaadi Christopher J Finney

This study examined a recently developed short version of the Children's Social Desirability (CSD-S) scale with 157 fourth-grade children. Of interest was a) whether one-month test-retest reliability would vary as a function of test assessment mode (interview or classroom), gender, race, SES, and BMI percentile, and b) whether the degree of social desirability would vary as a function of these ...

Journal: :Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology 2011
Antti K O Paukkunen Miika Leminen Raimo Sepponen

OBJECTIVE The aim was to study how the measurement error affects the repeatability of mismatch negativity (MMN) measurements. METHODS Event-related potentials (ERPs) to changes in sound frequency, location, intensity, duration, and composition were recorded five times during 1-3 weeks from 13 healthy adults using a multi-feature MMN paradigm. The accumulation of MMN was modeled empirically wi...

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