Multivariate Analysis of Covariance

1998 ◽  
pp. 93-99
Author(s):  
Charles E. Brown
Keyword(s):  
Multivariate Analysis ◽  
Analysis Of Covariance

scholarly journals Physical Activity Patterns in Youth With Intellectual Disabilities

2016 ◽  
Vol 33 (4) ◽  
pp. 374-390 ◽  
Author(s):  
Samantha J. Downs ◽  
Stuart J. Fairclough ◽  
Zoe R. Knowles ◽  
Lynne M. Boddy
Keyword(s):  
Physical Activity ◽  
Multivariate Analysis ◽  
Intellectual Disabilities ◽  
Activity Patterns ◽  
Final Analysis ◽  
Analysis Of Covariance ◽  
Age Group ◽  
Physical Activity Patterns

The aim of this study was to assess the physical activity (PA) patterns of youth with intellectual disabilities (ID). PA was monitored for 7 days in 70 participants, 5–15 years old, using accelerometers. There were 32 participants included in the final analysis. Habitual PA and the number of continuous bouts accrued for a range of bout lengths (5–600 s) for light (LPA), moderate (MPA), and vigorous (VPA) PA were calculated. Multivariate analysis of covariance was used to assess differences in the number of continuous bouts by sex, age, and ID group and between week and weekend days. Participants exhibited short sporadic bursts of activity. The number of continuous bouts decreased as the intensity and duration increased. Few differences in PA patterns were reported by sex, ID group, and age group and between week and weekend days, possibly due to the generally low PA levels in this population.

scholarly journals The Speech “Bamana”: Using the Syllable Repetition Task to Identify Underlying Phonological Deficits in Children With Speech and Language Impairments

2020 ◽  
Vol 63 (7) ◽  
pp. 2229-2244
Author(s):  
Elizabeth Roepke ◽  
Kathryn E. Bower ◽  
Catherine A. Miller ◽  
Françoise Brosseau-Lapré
Keyword(s):  
Multivariate Analysis ◽  
Initial Stress ◽  
Language Disorder ◽  
Speech Sound ◽  
Analysis Of Covariance ◽  
Speech And Language ◽  
Speech Sound Disorder ◽  
Phonological Deficits ◽  
Syllable Repetition ◽  
Repetition Task

Purpose This study compared performance on the Syllable Repetition Task (SRT) by preschoolers with diverse speech and language abilities to identify underlying impairments in speech processes. Method Three groups of 13 children ages 4 and 5 years with (a) typically developing (TD) speech and language, (b) speech sound disorder (SSD), and (c) comorbid developmental language disorder and speech sound disorder (DLD + SSD) completed the SRT. We calculated competence, memory, encoding, and transcoding scores, as well as word-initial stress pattern and vowel accuracy. Results A 3 × 3 (Group × Syllable length) factorial multivariate analysis of covariance revealed group differences for all measures and syllable length differences for memory, transcoding, and competence. There were no interactions between group and syllable length. TD children obtained the highest scores on each measure, though children with DLD + SSD performed similarly to TD children on encoding when vocabulary was included as a covariate. Children with SSD only outperformed children with DLD + SSD on competence and transcoding, and these two groups performed similarly on memory. A separate exploratory analysis using a 3 × 3 multivariate analysis of covariance revealed that children with DLD + SSD were more likely than children in the other groups to produce weak word-initial stress and vowel errors during syllable repetition. Conclusion Children with SSD and DLD + SSD exhibit underlying phonological deficits on the SRT compared to TD children. Results support the claim that memory and encoding are deficits in SSD. In addition, transcoding deficits were identified among children with no known oromotor impairment. Therefore, more research is required to identify the relationship between SRT performance and explicit measures of phonological processing.

One size doesn’t fit all: a uses and gratifications analysis of social media platforms

2020 ◽  
Vol 14 (2) ◽  
pp. 269-284 ◽  
Author(s):  
Mark J. Pelletier ◽  
Alexandra Krallman ◽  
Frank G. Adams ◽  
Tyler Hancock
Keyword(s):  
Social Media ◽  
Multivariate Analysis ◽  
Qualitative Study ◽  
Design Methodology ◽  
Research Study ◽  
Analysis Of Covariance ◽  
Main Study ◽  
Content Type ◽  
Value Propositions ◽  
Social Media Platforms

Purpose This research study aims to investigate consumer usage motivations for three of the top social media platforms today: Facebook, Twitter and Instagram. Additionally, through understanding various platform distinctions, firms can understand which social media platforms consumers prefer to use to co-create with brands online. Design/methodology/approach An exploratory qualitative study is first conducted to understand consumer motivations for using different social media platforms. The main study tests five hypotheses related to consumer usage intentions and social media co-creation behavior across three social media platforms. A survey is conducted with 1,050 social media users with a comparison of mean responses using multivariate analysis of covariance. Findings Results support significant differences between platforms in terms of use and co-creation behaviors. For informational purposes, consumers gravitate toward Twitter. For social purposes, Twitter and Instagram are preferred. Instagram is the primary platform for entertainment motivation as well as co-creating with brands via social media. Surprisingly, Facebook shows the lowest usage intentions and co-creation despite being the largest platform and network most widely used by marketers. Originality/value To the best of the authors’ knowledge, this is one of the first studies to take a multi-platform approach to understanding consumer social media use and co-creation with brands. The results highlight that marketing academics and practitioners must segment the various social media platforms as each offers unique value propositions to consumers.

Effect of Various Sensory Inputs on Prose Learning

1979 ◽  
Vol 48 (3) ◽  
pp. 843-847
Author(s):  
Thomas N. Dorsel
Keyword(s):  
Multivariate Analysis ◽  
Principal Result ◽  
Visual Input ◽  
Analysis Of Covariance ◽  
Auditory Input ◽  
Sensory Inputs ◽  
Comparison Test ◽  
Multiple Comparison Test ◽  
Significant Difference ◽  
Prose Learning

A pretest-posttest design was used to determine the effects of auditory input, visual input, auditory-visual input, and no input on prose learning. The principal result of a multivariate analysis of covariance combined with a multiple-comparison test was a significant difference in favor of auditory input. This difference seemed to be confined to definition items which were the substance of the input as opposed to application items which were not involved explicitly in the input. A difference between the present study and earlier ones was that a shorter exposure of stimuli was employed in the present study, which may have led to results favoring auditory input in contrast to earlier findings favoring visual input.

The Effects of Studying Decimal and Nondecimal Numeration Systems on Mathematical Understanding, Retention, and Transfer

1970 ◽  
Vol 1 (3) ◽  
pp. 162-172
Author(s):  
Richard C. Diedrich ◽  
Vincent J. Glennon
Keyword(s):  
Multivariate Analysis ◽  
Mathematical Understanding ◽  
Analysis Of Covariance ◽  
Value Systems ◽  
Place Value ◽  
Decimal System ◽  
Statistical Procedures ◽  
System 2 ◽  
Grade Groups ◽  
Numeration Systems

What are the effects of studying 1, 3, or 5 place-value systems of numeration? Each of 3 experimental 4th grade groups received 30 minutes of instruction for 9 consecutive school days. A 4th group served as control. Statistical procedures included multivariate analysis of covariance. The results suggest: for the group under consideration (1) a study of the decimal system alone tends to be just as effective as a study of 3 or 5 systems in promoting understanding of the decimal system; (2) a study of either 3 or 5 place-value systems of numeration appears to be more effective than a study of the decimal system alone in promoting understanding of the general principles of place-value systems of numeration.

Analysis of the Effect of Competitive Trait Anxiety on Performance in Taekwondo Competition

1992 ◽  
Vol 75 (1) ◽  
pp. 239-243 ◽  
Author(s):  
Mel E. Finkenberg ◽  
James M. Dinucci ◽  
E. Donice McCune ◽  
Sandra L. McCune
Keyword(s):  
Multivariate Analysis ◽  
Trait Anxiety ◽  
Analysis Of Covariance ◽  
Normative Sample ◽  
Male Youth ◽  
Youth Athletes ◽  
Competitive Anxiety ◽  
Anxiety Test

This study examined the effect of competitive trait anxiety on performance in open- (sparring) and closed- (forms) skills in Taekwondo. 58 subjects responded to the Sports Competition Anxiety Test immediately prior to competition. Subjects were categorized into groups showing high, medium, and low competitive anxiety to assess whether differences on the variables of sparring and forms were significantly related with scores on competition anxiety, age, or gender after adjusting for the covariate of years of competition. Multivariate analysis of covariance showed no significant differences between subjects and the normative samples on competitive anxiety scores except for boys, whose scores were significantly higher than those of a normative sample of male youth athletes.

Perceptions of Sex Roles: Is There Any Consistency?

1983 ◽  
Vol 53 (3_suppl) ◽  
pp. 1251-1258
Author(s):  
Patrick G. Buckley ◽  
John D. Hundleby
Keyword(s):  
Multivariate Analysis ◽  
Repeated Measures ◽  
Sex Roles ◽  
Principal Axis ◽  
Sex Role ◽  
Analysis Of Covariance ◽  
Sex Role Stereotypes

The research examined how the sexes are perceived in a number of different situations. A questionnaire was used to obtain the perceptions of 16 situations, each containing a male or female, by 209 subjects (114 females, 95 males). Subjects described their perceptions in each situation on 40 word pairs. All effects were significant in a repeated-measures multivariate analysis of covariance of the data. The correlations of the 40 word pairs contained 6 oblique, principal axis factors: Thoughtful, Egotistical, Beauty, Confidence, Easy Going, and Bad. The results show the sexes to be perceived inconsistently in the different situations. Such findings contrast with previous sex-role stereotypes and support an interactional viewpoint.

An Analysis of Morphometric Characters of Greenland Halibut (Reinhardtius hippoglossoides) in the Northwest Atlantic Using a Multivariate Analysis of Covariance

1988 ◽  
Vol 45 (4) ◽  
pp. 580-585 ◽  
Author(s):  
W. R. Bowering
Keyword(s):  
Multivariate Analysis ◽  
The State ◽  
Analysis Of Covariance ◽  
Greenland Halibut ◽  
Northwest Atlantic ◽  
Morphometric Characters ◽  
Davis Strait ◽  
Greenland Halibut Reinhardtius Hippoglossoides ◽  
Reinhardtius Hippoglossoides

Eleven morphometric characters were measured on samples of Greenland halibut (Reinhardtius hippoglossoides) from eight different areas of high Greenland halibut abundance throughout the Northwest Atlantic from Davis Strait to the northern Grand Bank. These data were then analysed using a multivariate analysis of covariance technique with the aim of using the results to delineate Greenland halibut stocks throughout the study area. The results suggested that each area examined may very well support a separate stock. However, given the state of knowledge of this resource, this was not believed to be truly the case. Alternative explanations for the results are discussed.

Multivariate analysis of covariance based on residuals

1999 ◽  
Vol 28 (11) ◽  
pp. 2687-2715 ◽  
Author(s):  
Michael J. Jackson ◽  
John E. Hewett
Keyword(s):  
Multivariate Analysis ◽  
Analysis Of Covariance
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