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Results for “canonical correlation analysis”

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At least 235 records · Page 13Linked to original sources
PubMed2004

Perceived parental beliefs about the causes of success in sport: relationship to athletes' achievement goals and personal beliefs.

This study examined the relationship between perceived parental beliefs and young athletes' achievement goal orientations and personal beliefs about the causes of success in sport. Participants were 183 male and female athletes, 11-18 years old, involved in team sports. Athletes completed the Task and Ego Orientation in Sport Questionnaire, the Beliefs about the Causes of Sport Success Questionnaire, and two modified versions of the latter inventory to assess their perceptions of their parents' beliefs. Canonical correlation analysis revealed that perceived parental beliefs were related to goal orientations and personal beliefs in a conceptually coherent fashion. Thus, the perceived parental belief that effort leads to success in sport was related to athletes' task orientation and personal belief that effort causes sport success. In contrast, the perceived parental beliefs that superior ability, external factors, and using deceptive tactics are precursors to success in sport corresponded to athletes' ego orientation and the same personal beliefs. The findings are discussed in terms of their implications for understanding the socialization experiences of young athletes.

Achievement↗
PubMed2004

Effect of motivational climate on sportspersonship among competitive youth male and female football players.

The purpose of this study was to investigate the influence of perceived motivational climate and gender on sportspersonship behavior of competitive youth football players. Participants were 512 boy and 202 girl Norwegian youth football players (12-14 years old) competing in an international football tournament. A 2 x 2 x 2 (gender, mastery climate high and low, performance climate high and low) MANOVA produced no multivariate or interaction effects, but main effects for gender, performance climate, and mastery climate did emerge. Post hoc analyses of the simple main effects found that boys and girls were different in sportspersonship, but only in that boys were more sportspersonlike than girls on one of the four sportspersonship dimensions. Players perceiving a high mastery climate endorsed sportspersonship more than those players perceiving a low mastery climate, and players perceiving a high performance climate were less likely to endorse sportspersonship than players perceiving a low performance climate. Canonical correlation analysis revealed that a strong mastery climate was positively associated with commitment, respect for social conventions, and respect for rules and officials. A strong performance climate was negatively associated with respect and concern for social conventions and respect for rules and officials, while a positive association emerged for respect and concern for the opponent. The results of our study suggest that both boys and girls may well perceive the coach emphasizing similar criteria of success and failure and thereby a similar culture of sportspersonship, while in general a strong mastery climate leads to a higher sportspersonship orientation.

Adolescent↗
PubMed1984

A multidimensional approach to the relationship between mood and weather.

Ten mood variables were related to eight weather variables in a multidimensional study. Data were collected from 24 male subjects over 11 consecutive days. The mood variables were as follows: concentration, cooperation, anxiety, potency, aggression, depression, sleepiness, scepticism, control, and optimism. The weather variables included: hours of sunshine, precipitation, temperature, wind direction, wind velocity, humidity, change in barometric pressure and absolute barometric pressure. Humidity, temperature and hours of sunshine had the greatest effect on mood. High levels of humidity lowered scores on concentration while increasing reports of sleepiness. Rising temperatures lowered anxiety and scepticism mood scores. Humidity was the most significant predictor in regression and canonical correlation analysis. Implications for school and office performance are discussed which highlight the importance of humidity as a weather variable.

Adolescent↗
PubMed2005

Exploratory modeling of yeast stress response and its regulation with gCCA and associative clustering.

We model dependencies between m multivariate continuous-valued information sources by a combination of (i) a generalized canonical correlations analysis (gCCA) to reduce dimensionality while preserving dependencies in m - 1 of them, and (ii) summarizing dependencies with the remaining one by associative clustering. This new combination of methods avoids multiway associative clustering which would require a multiway contingency table and hence suffer from curse of dimensionality of the table. The method is applied to summarizing properties of yeast stress by searching for dependencies (commonalities) between expression of genes of baker's yeast Saccharomyces cerevisiae in various stressful treatments, and summarizing stress regulation by finally adding data about transcription factor binding sites.

Animals↗
PubMed1995

Blood coagulation and fibrinolysis in eclamptic patients and their correlation with the clinical signs.

We studied the impact of blood coagulation and fibrinolysis on the clinical features of eclamptic patients (n = 20) in Bangladesh. The variables used were edema, proteinuria, blood pressure, number of convulsions, level of consciousness at the time of admission, thrombin antithrombin complexes (TAT), antithrombin (AT) III (%) activity and antigen, D dimer fibrin degradation product and alpha 2-plasmin inhibitor-plasmin complex (PIC) in plasma. Canonical correlation analysis was made to obtain clinical index, eclampsia index and two coagulation indices. On admission, the mean values of coagulation parameters were AT III activity: 83.2% (range 57-108), TAT complex: 47.6 ng/ml (range 11.5-60), D dimer: 1,693 ng/ml (range 417-8,276) and PIC 1.4 mg/ml (range 0.4-3.3). We found a significant correlation between the eclampsia index and clinical index (r = 0.601; p = 0.01). Gestosis index, clinical index, and eclampsia index have also a strong correlation with the coagulation index (r = 0.695, p < 0.005; r = 0.871, p < 0.0001 and r = 0.805, p < 0.0001, respectively). Coagulation and fibrinolysis were markedly activated in eclampsia. The correlation between the clinical status and coagulation status in this study suggested a close relation between the coagulation and the development and progression of the disease.

Adolescent↗
PubMed1993

Modulation of the expression of human LDL-Apo B-100 epitopes by lipids and apolipoproteins.

The purpose of the present study was to determine the immunochemical properties of apolipoprotein (apo) B-100 associated with low density lipoprotein (LDL) in relation to lipid and apolipoprotein composition. LDLs were isolated by sequential ultracentrifugation (1.019 < d < 1.050 g/mL) from two healthy volunteers and 21 dyslipidemic patients to obtain heterogeneous samples of LDL. Lipid (free cholesterol, cholesteryl esters, triglycerides, and phospholipids) and apolipoprotein contents (apo B, apo C-III, apo E) were determined in each LDL sample. Immunoreactivities of apo B were tested in solid-phase competitive-binding radioimmunoassays using seven monoclonal anti-LDL antibodies that reacted with defined epitopes of apo B-100. The relation between lipid and/or protein variables and the immunoreactivity of apo B was evaluated by successive use of Spearman's rank simple correlation, partial correlation, and canonical correlation analyses. The canonical correlation analysis showed that apo B-100 immunoreactivity on LDL is highly dependent on lipid and apolipoprotein composition simultaneously. The results confirmed the influence of surface and core lipids on the expression of the apo B-100 epitopes, independent of their location on the molecule. However, the lipid requirement of LDL strongly influences the expression of epitopes mapped in the LDL receptor-recognition domain. In contrast to apo E, apo C-III does not seem to influence the expression of the apo B-100 epitopes in the LDL range studied.(ABSTRACT TRUNCATED AT 250 WORDS)

Antibodies, Monoclonal↗
PubMed1996

Usefulness of multiple equations for predicting preventive oral health behaviors.

Canonical correlation analyses of a previous dental survey suggested that dental checkups, flossing, and tooth brushing could all be predicted from a single equation. Most theories and research about the influence of beliefs on behavior, however, suggest different behaviors will be best predicted by different behavior-specific measures. The current survey investigated influences on brushing, flossing, and dental checkups in a probability sample of adults in the Detroit tri-county area. Both behavior-specific variables, such as perceived benefits and costs of flossing, and general variables, such as gender, were included as predictors. Canonical correlation analysis indicated three equations were needed to predict the three oral health behaviors. Flossing frequency, for example, was best predicted by confidence in flossing ability and beliefs about the benefits of and barriers to flossing. The results suggest that even these closely related behaviors are best predicted using separate equations that include mostly behavior-specific predictors.

Adolescent↗
PubMed1983

Diagnosis of iron deficiency: mean corpuscular hemoglobin (MCH) as a predictor of iron deficiency in infants.

Hematologic variables were measured in 240 apparently healthy infants ranging from 1-12 months of age attending a well baby clinic. There were 20 infants for each month of age. Hematologic parameters were measured in each infant by Coulter Counter Model S. Serum iron, total iron binding capacity, free erythrocyte protoporphyrin (FEP) and serum ferritin levels were measured in most infants. Their weights together with their serum iron, total iron binding capacity, and serum ferritin were judged to be independent variables of iron status, whereas the hematologic variables were considered to be response variables indicative of iron status. The correlation coefficients among these variables, after excluding redundant variables and transforming to logarithms, were computed. Canonical correlation analysis was applied to the matrix of correlation coefficients to yield the linear function of the independent variables most highly correlated with a linear function of the response variables. The linear function of the response variables was found to be well approximated by the logarithm of the mean corpuscular haemoglobin, which was highly correlated with each of the independent variables.

Anemia, Hypochromic↗
PubMed1979

The common space of personality traits and vocational interests.

Investigated relationships between personality traits and vocational interests. Cattell's (Research and Consultations Center of Educational Personnel, 1976) CAQ Part I and the Ramak interest inventory (Meir, 1975) based upon Roe's (1956) occupational classification system were administered to a sample of 397 university applicants. Canonical Correlation Analysis and Smallest Space Analysis were used to test two hypotheses (a) relationships exist between personality traits and vocational interests; and (b) personality traits which characterize occupational profiles are arranged in circular order corresponding to the configuration Of the vocational fields which represent those occupations. Both hypotheses were supported by the data.

Journal Article↗
PubMed1982

Relationship between simulated fire fighting tasks and physical performance measures.

Twenty-six physical performance variables were assessed on 100 professional fire fighters and correlated against timed measures of five sequentially performed fire fighting tasks and against fractionated heart rates collected during performance of the fire fighting tasks via Holter monitoring of the ECG. Canonical correlation analysis revealed that two factors, physical work capacity and resistance to fatigue, accounted for the fractionated time and heart rate data. The first factor, influenced heavily by the average intra-task heart rate (L = 0.94) and by the approximately equal weights for the five simulated tasks (-0.53 less than L less than -0.36), reflected the fact that relatively high muscular strength and endurance, coupled with a near maximal aerobic capacity effort, were required to complete the simulated tasks. The battery of physical performance variables best predicting the first factor (R2 = 0.63) included maximal heart rate, sit-ups, grip strength, age, and submaximal oxygen pulse. The second factor (R2 = 0.39), most heavily loaded by the simulated rescue (L = 0.70) and chopping tasks (L = 0.42), appeared to represent an ability to complete all tasks quickly by exhibiting a resistance to fatigue brought on by the demands of the earlier tasks. The battery of physical performance variables best predicting the second factor included lean body weight, maximal heart rate, final treadmill grade, age, and percent fat. This study demonstrated that physiological factors related to the performance of occupational tasks can be identified and measured.

Adult↗
PubMed2025

Tensor decomposition of multi-dimensional splicing events across multiple tissues to identify splicing-mediated risk genes associated with complex traits.

Identifying risk genes associated with complex traits remains challenging. Integrating gene expression data with Genome-Wide Association Study (GWAS) through Transcriptome-Wide Association Study (TWAS) methods has discovered candidate risk genes for various complex traits. Splicing, which explains a comparable heritability of complex traits as gene expression, is&#xa0;under-explored&#xa0;due to its multidimensionality. To leverage multiple splicing events in a gene and shared splicing across tissues, we develop Multi-tissue Splicing Gene (MTSG), which employs tensor decomposition and sparse Canonical Correlation Analysis (sCCA) to extract meaningful information from high-dimensional multiple splicing events across multiple tissues. We build MTSG models using GTEx data and apply them to GWAS summary statistics of Alzheimer's disease (AD) (111,326 cases and 677,663 controls) and schizophrenia (SCZ) (36,989 cases and 113,075 controls). We identify 174 and 497 significant splicing-mediated risk genes for AD and SCZ, respectively, at Bonferroni correction. For AD, our results demonstrate significant enrichment of AD related pathways and identify additional AD risk genes not detected in the single-tissue analysis, while preserving most top genes identified in the brain frontal cortex. Consistently, for SCZ, genes identified by our brain-wide MTSG model, built from a cluster of 13 brain tissues, exhibit stronger enrichment in SCZ-relevant genes and MTSG identifies unique SCZ risk genes compared to single-tissue models. These results showcase that our MTSG models capture distinctive splicing events across tissues, which might be overlooked when using single tissue alone. Our MTSG models can be applied to other complex traits to help identify splicing-mediated disease risk genes.

Humans↗
PubMedDate not supplied

In situ bioremediation through mulching of soil polluted by a copper-nickel smelter.

Bioremediation of a heavy metal-polluted soil was investigated in a 3-yr field experiment by adding mulch to a polluted forest floor. The mulch consisted of a mixture of compost and woodchips. The remediation treatment decreased the toxicity of the soil solution to bacteria as determined by the [3H]-thymidine incorporation technique, that is, by measuring the growth rate of soil bacteria extracted from unpolluted humus after exposing them to soil solution containing heavy metals from the experimental plots. Canonical correlation analysis was performed in order to identify the chemical and microbiological changes in the soil. The pH of the mulched organic layer increased by one unit. The concentration of complexed Cu increased and that of free Cu2+ decreased in the soil solution from the mulch treatment. According to basal respiration and litter decomposition, microbial activity increased during the 3 yr following the remediation treatment. The [3H]-thymidine incorporation technique was also used to study the growth rate and tolerance of bacteria to Cu. The bacterial growth rate increased and the Cu tolerance decreased on the treated plots. The structure of the microbial community, as determined by phospholipid fatty acid (PLFA) analysis, remained unchanged. The results indicate that remediation of the polluted soil had occurred, and that adding a mulch to the forest floor is a suitable method for remediating heavy metal-polluted soil.

Bacteria↗
PubMed1995

Impact of contextual variables on adolescent situational expectation of substance use.

The relationship between contextual variables and situational expectation of drug and alcohol use at the school level suggested by Interactive theory was investigated [1, 2]. A canonical correlation analysis supported a significant relationship between situational expectation of drug and alcohol use and several contextual variables including Students' Perceptions of What Teachers Expect of Them Academically, Percentage of White Students, and the Prosperity of the School. The results indicated that the more prosperous the school and the greater the students' perceptions of what teachers expect of them academically, the lower the situational expectation of smoking cigarettes or taking depressants and the higher the percentage of white students the higher the situational expectation of drinking beer and liquor. Implications for prevention programs and school environment are discussed.

Adolescent↗
PubMed1976

Interrelationships of perceptual modality, short-term memory and reading achievement.

Visual and auditory components of short-term memory and perception were used as predictors of vocabulary and comprehension components of reading for 72 children from Grades 2 to 5 in a low socio-economic rural school. All six variables were significantly intercorrelated (with the exception of visual short-term memory and auditory perception). When canonical correlation analysis was applied using the four scores measuring short-term memory and perception as predictors of the two reading scores, one was significant, and each variable made a significant contribution. Not only are short-term memory and perception a part of learning to read but both visual and auditory channels are important.

Achievement↗
PubMed1996

Goal orientations and perceived purposes of training among elite athletes.

The goal perspective theories of motivated behavior are primarily concerned with the social, psychological, and behavioral antecedents and consequences of two goal perspectives of task orientation and ego orientation. According to Nicholls, goal perspectives may also influence the way individuals perceive the purpose of their involvement in achievement contexts. This study examined among elite athletes the relation of goal orientations to perceived purposes of their involvement in training. Canonical correlation analysis showed that ego-oriented athletes strongly endorsed status reasons for participation in training, whereas those task-involved reported a high preference for social purposes. The results suggest that the personal utility value of practicing in sport as perceived by elite athletes to some extent is different dependent upon their motivational goal perspectives.

Achievement↗
PubMed1990

Perceived parental inconsistency as a factor in the emotional development of behaviour-disordered children.

55 English-speaking institutionalized adolescents (37 boys and 18 girls between ages of 14 and 19 yr.) were given questionnaires measuring perceived parental inconsistency and different components of emotional development. Canonical correlation analysis indicated that a significant proportion (51%) of the variation in emotional adjustment was accounted for by parental inconsistency. It is suggested that the efficiency of using parents as agents of change for their behaviour-disordered children can be enhanced by including theory on parenteral inconsistency in program content.

Adolescent↗
PubMed1995

Associations of scores on the White-Campbell Psychological Birth Order Inventory and the Kern Lifestyle Scale.

This study investigated the relations among psychological birth order, actual birth order, and lifestyle. The study also further examined the convergent validity of the White-Campbell Psychological Birth Order Inventory. This inventory and Kern's Lifestyle Scale were administered to 126 individuals in a southeastern urban university. The several analyses of variance and canonical correlation analysis (1) supported a stronger relationship between psychological birth order and lifestyle than between actual birth order and lifestyle, (2) identified differential relationships between particular birth-order positions and lifestyle scales that were predicted and in accord with Adlerian theory, and (3) further supported the validity of the inventory. The results reaffirmed the lifestyle pattern and birth-order characterizations of Adlerian theory.

Adult↗
PubMed1998

Role of hope in predicting anxiety about statistics.

Hope is defined as a cognitive set which consists of level of goal-directed determination (agency) and propensity to plan ways to achieve goals (pathways). This study investigated whether hope was related to anxiety about statistics. Participants were 109 graduate students from a variety of disciplinary backgrounds enrolled in courses on statistics and educational research methods. A canonical correlation analysis was interpreted as indicating that students who had the poorest sense of successful determination in relation to their goals and who had the least positive appraisals of their ability to generate ways to overcome goal-related with worth of statistics, interpretation, tests and class, computational self-concept, fear of asking for help, and fear of the instructor. Based on these findings, it is recommended that researchers investigate whether interventions aimed at agency and pathways help to reduce such anxiety.

Adult↗