A Four-Factor Symptom Model for Student Athletes with and without Prior Concussions

2019 ◽  
Vol 34 (5) ◽  
pp. 750-750
Author(s):  
J E Karr ◽  
B A Maxwell ◽  
R Zafonte ◽  
P D Berkner ◽  
G L Iverson
Keyword(s):  
Factor Model ◽  
Empirical Support ◽  
Symptom Clusters ◽  
Group Differences ◽  
Future Research ◽  
Symptom Scale ◽  
Affective Symptoms ◽  
Partial Invariance ◽  
History Of ◽  
Vestibular Symptoms

Abstract Purpose This study was designed to determine whether the factor structure of the Post-Concussion Symptom Scale (PCSS) is consistent (i.e., invariant) in subgroups of youth stratified by their history of prior concussions. A four-factor model of the PCSS has empirical support (i.e., cognitive-sensory, sleep-arousal, vestibular-somatic, and affective symptoms), and the current investigation examined (i) whether this model is invariant across athletes with 0, 1, or ≥2 prior concussions and (ii) group differences across symptom clusters. Methods Participants included a large sample of adolescent athletes (54.4% boys; 13–18 years-old, M=15.50±1.27 years) with 0 (n=32,668), 1 (n=4,110), or ≥2 prior concussions (n=1,681) administered the 22-item PCSS at pre-season baseline. Measurement invariance was tested (good fit=CFI≥0.95; significant change-in-fit=∆CFI≥0.01) and effect sizes for group differences in symptom clusters were calculated. Results The four-factor model showed configural (CFI=0.968) and weak invariance (∆CFI=0.006), but not strong invariance. Comparisons based on concussion history across symptom clusters indicated very small differences between athletes with 0 and 1 prior concussion(s) (d=0.05-0.15), slightly larger differences between athletes with 1 and ≥2 prior concussion(s) (d=0.12-0.24), and modestly larger differences between athletes with 0 and ≥2 prior concussion(s) (d=0.17-0.35). Conclusion These findings support partial invariance of the four-factor PCSS model across athletes with and without a history of concussion. The association with prior concussion was greatest for cognitive-sensory symptoms and smallest for vestibular symptoms. Future research should explore whether alternative factor models are invariant across athletes with different numbers of prior concussions.

scholarly journals Differences in Symptom Clusters at Baseline Testing among Student Athletes with ADHD or Migraines

2019 ◽  
Vol 34 (5) ◽  
pp. 751-751
Author(s):  
J E Karr ◽  
B A Maxwell ◽  
R Zafonte ◽  
P D Berkner ◽  
G L Iverson
Keyword(s):  
Student Athletes ◽  
Factor Model ◽  
Empirical Support ◽  
Symptom Clusters ◽  
Effect Sizes ◽  
Group Differences ◽  
Symptom Scale ◽  
Configural Invariance ◽  
Affective Symptoms ◽  
Sleep Arousal

Abstract Purpose This study was designed to determine whether the factor structure of the Post-Concussion Symptom Scale (PCSS) is consistent (i.e., invariant) in subgroups of youth with pre-existing attention-deficit/hyperactivity disorder (ADHD) or migraines. A four-factor model of the PCSS has empirical support (i.e., cognitive-sensory, sleep-arousal, vestibular-somatic, and affective symptoms), and the current investigation examined (i) whether this model is invariant across athletes with and without ADHD or migraines and (ii) group differences across symptom clusters. Methods Participants included a large sample of adolescent athletes (N=39,242; 54.4% boys; 13–18 years-old, M=15.50±1.27 years), among which 2,543 reported ADHD and 2,638 reported having migraines. The 22-item PCSS was administered at pre-season baseline. Statistical analyses included invariance testing across ADHD and migraine groups. Good fit was defined as CFI≥0.95. Effect sizes for group differences in symptom clusters were calculated. Results Configural invariance was established across participants with and without ADHD (CFI=0.967) and with and without migraines (CFI=0.965); however, weak invariance was not established for either diagnostic group. Effect sizes (Cohen’s d) of group differences varied by symptom cluster: cognitive-sensory (ADHD=0.44; migraine=0.38), sleep-arousal (0.33, 0.37), vestibular-somatic (0.17, 0.45), and affective (0.27, 0.28). Conclusion Although the four-factor model has been previously published and replicated among healthy student athletes, this model was only partially invariant for participants with ADHD or migraines. The cognitive-sensory factor showed the largest differences based on ADHD, whereas the vestibular-somatic factor showed the largest differences based on migraine history.

The Lexical Foundation of the Big Five Factor Model

2015 ◽  
Author(s):  
Boele de Raad ◽  
Boris Mlačić
Keyword(s):  
Big Five ◽  
Factor Model ◽  
Five Factor Model ◽  
Future Research ◽  
Common Stock ◽  
Ancient History ◽  
The World ◽  
History Of ◽  
The Common ◽  
Personality Description

A dictionary is the tangible repository of the common stock of words, although dictionaries comprise at best 10% of the full lexicon. Part of the lexicon is made up of the words used to describe what people do and what people are like. The psycholexical approach to personality focuses on this subset of words and on its exploitation, or what can be said to be the glossary of personality. This chapter is concerned with the history of the psycholexical approach to personality description, from ancient history to the more recent efforts, albeit focusing in particular on its modern history. Psycholexical taxonomies from around the world will be considered, as well as taxonomies based on nouns, verbs, adverbs, and their combinations. Ongoing controversies, difficulties, and disputes regarding alternative psycholexical personality structures will be considered, as well as recommendations for future research.

Convergent and Discriminant Validity of the Five Factor Form and the Sliderbar Inventory

Assessment ◽  
2016 ◽  
Vol 25 (2) ◽  
pp. 222-234 ◽  
Author(s):  
Stephanie L. Rojas ◽  
Thomas A. Widiger
Keyword(s):  
Mental Health Treatment ◽  
Discriminant Validity ◽  
Factor Model ◽  
Five Factor Model ◽  
Future Research ◽  
Health Treatment ◽  
Personality Functioning ◽  
Convergent And Discriminant Validity ◽  
History Of ◽  
Factor Form

Existing measures of the five factor model (FFM) of personality are generally, if not exclusively, unipolar in their assessment of maladaptive variants of the FFM domains. However, two recently developed measures, the Five Factor Form (FFF) and the Sliderbar Inventory (SI), include items that assess for maladaptive variants at both poles of each item. This structure is unique among existing measures of personality and personality disorder, although there is a historical, infrequently used Stone Personality Trait Schema (SPTS) that had also included this item structure. To facilitate an exploration of their convergent and discriminant validity, the SI and SPTS items were reorganized into FFM scales. The convergent and discriminant validity of the FFF, SI-FFM, and SPTS-FFM scales was considered in a sample of 450 adults with current or a history of mental health treatment. The FFF, SI-FFM, and SPTS-FFM were also compared with respect to their relationship with FFM domains. Finally, the FFF items and SI-FFM scales were tested with respect to their relationship with measures of maladaptive variants of both high and low agreeableness and conscientiousness. The implications of the results are discussed with respect to the assessment of maladaptive personality functioning, and suggestions for future research are provided.

scholarly journals Measurement Invariance of Perfectionism Measures in Students with and without a History of Non-Suicidal Self-Injury

2021 ◽  
Vol 18 (19) ◽  
pp. 10171
Author(s):  
Kate E. Tonta ◽  
Mark Boyes ◽  
Joel Howell ◽  
Peter McEvoy ◽  
Penelope Hasking
Keyword(s):  
Measurement Invariance ◽  
Factor Model ◽  
Bifactor Model ◽  
Residual Error ◽  
Group Differences ◽  
Partial Metric ◽  
Total N ◽  
Self Injury ◽  
History Of ◽  
Metric Invariance

Perfectionism is a transdiagnostic process which may be implicated in the onset and maintenance of non-suicidal self-injury. No study has evaluated whether reported differences in perfectionism between individuals with and without a history of self-injury represent genuine group differences or measurement artefacts. The present study reports an investigation of the measurement invariance of two common scales of perfectionism, the Frost Multidimensional Perfectionism Scale-Brief (FMPS-Brief) and the Clinical Perfectionism Questionnaire (CPQ), among university students (Mage = 20.48, SDage = 2.22, 75.3% female, 22.8% male) with and without a history of self-injury (total n = 711). Results revealed full residual error invariance for the two-factor model of FMPS-Brief, while the bifactor model of the FMPS-Brief and the two-factor model of the CPQ demonstrated partial metric invariance. Accounting for partial metric invariance, the bifactor model of the FMPS-Brief also demonstrated partial residual error invariance. The current findings suggest that observed differences using the FMPS-Brief reflect genuine differences in perfectionism between individuals with and without a history of self-injury. Further, while researchers using the bi-factor model can have confidence that the general factor can adequately assess group differences, differential item functioning should be considered if using the strivings and concerns factors. Finally, in the current data, the CPQ did not perform as expected in baseline model fit and future research should replicate assessments of measurement invariance in this measure.

Speeded Paper-Pencil Sustained Attention and Mental Speed Tests

2008 ◽  
Vol 29 (4) ◽  
pp. 205-216 ◽  
Author(s):  
Stefan Krumm ◽  
Lothar Schmidt-Atzert ◽  
Kurt Michalczyk ◽  
Vanessa Danthiir
Keyword(s):  
Sustained Attention ◽  
Time Pressure ◽  
Factor Model ◽  
Higher Order ◽  
Future Research ◽  
Perceptual Speed ◽  
Speed Factor ◽  
Close Relationship ◽  
Task Processing ◽  
Order Factor

Mental speed (MS) and sustained attention (SA) are theoretically distinct constructs. However, tests of MS are very similar to SA tests that use time pressure as an impeding condition. The performance in such tasks largely relies on the participants’ speed of task processing (i.e., how quickly and correctly one can perform the simple cognitive tasks). The present study examined whether SA and MS are empirically the same or different constructs. To this end, 24 paper-pencil and computerized tests were administered to 199 students. SA turned out to be highly related to MS task classes: substitution and perceptual speed. Furthermore, SA showed a very close relationship with the paper-pencil MS factor. The correlation between SA and computerized speed was considerably lower but still high. In a higher-order general speed factor model, SA had the highest loading on the higher-order factor; the higher-order factor explained 88% of SA variance. It is argued that SA (as operationalized with tests using time pressure as an impeding condition) and MS cannot be differentiated, at the level of broad constructs. Implications for neuropsychological assessment and future research are discussed.

Bayesian Inference in Human Time Perception

2017 ◽  
Author(s):  
Darren Rhodes
Keyword(s):  
Time Perception ◽  
Likelihood Function ◽  
Human Perception ◽  
Future Research ◽  
Temporal Properties ◽  
History Of Research ◽  
Psychophysical Testing ◽  
History Of ◽  
Fundamental Dimension ◽  
Perception Of Time

Time is a fundamental dimension of human perception, cognition and action, as the perception and cognition of temporal information is essential for everyday activities and survival. Innumerable studies have investigated the perception of time over the last 100 years, but the neural and computational bases for the processing of time remains unknown. First, we present a brief history of research and the methods used in time perception and then discuss the psychophysical approach to time, extant models of time perception, and advancing inconsistencies between each account that this review aims to bridge the gap between. Recent work has advocated a Bayesian approach to time perception. This framework has been applied to both duration and perceived timing, where prior expectations about when a stimulus might occur in the future (prior distribution) are combined with current sensory evidence (likelihood function) in order to generate the perception of temporal properties (posterior distribution). In general, these models predict that the brain uses temporal expectations to bias perception in a way that stimuli are ‘regularized’ i.e. stimuli look more like what has been seen before. Evidence for this framework has been found using human psychophysical testing (experimental methods to quantify behaviour in the perceptual system). Finally, an outlook for how these models can advance future research in temporal perception is discussed.

Fragments of the American Dream: Immigration, Race, and Medical Care in the Segregated South, 1929

Public Voices ◽  
2016 ◽  
Vol 13 (2) ◽  
pp. 1
Author(s):  
John R Phillips
Keyword(s):  
United States ◽  
American Dream ◽  
Black Population ◽  
The United States ◽  
Single Woman ◽  
Future Research ◽  
Legal Doctrine ◽  
Quarter Century ◽  
History Of ◽  
Sunflower County

The cover photograph for this issue of Public Voices was taken sometime in the summer of 1929 (probably June) somewhere in Sunflower County, Mississippi. Very probably the photo was taken in Indianola but, perhaps, it was Ruleville. It is one of three such photos, one of which does have the annotation on the reverse “Ruleville Midwives Club 1929.” The young woman wearing a tie in this and in one of the other photos was Ann Reid Brown, R.N., then a single woman having only arrived in the United States from Scotland a few years before, in 1923. Full disclosure: This commentary on the photo combines professional research interests in public administration and public policy with personal interests—family interests—for that young nurse later married and became the author’s mother. From the scholarly perspective, such photographs have been seen as “instrumental in establishing midwives’ credentials and cultural identity at a key transitional moment in the history of the midwife and of public health” (Keith, Brennan, & Reynolds 2012). There is also deep irony if we see these photographs as being a fragment of the American dream, of a recent immigrant’s hope for and success at achieving that dream; but that fragment of the vision is understood quite differently when we see that she began a hopeful career working with a Black population forcibly segregated by law under the incongruously named “separate but equal” legal doctrine. That doctrine, derived from the United States Supreme Court’s 1896 decision, Plessy v. Ferguson, would remain the foundation for legally enforced segregation throughout the South for another quarter century. The options open to the young, white, immigrant nurse were almost entirely closed off for the population with which she then worked. The remaining parts of this overview are meant to provide the following: (1) some biographical information on the nurse; (2) a description, in so far as we know it, of why she was in Mississippi; and (3) some indication of areas for future research on this and related topics.

Powerful Inscriptions: On the Semiotic Phenomenology of BDSM

2020 ◽  
Author(s):  
Richard Joseph Martin
Keyword(s):  
Future Research ◽  
Ethnographic Research ◽  
Linguistic Turn ◽  
Making Sense ◽  
Sociology Of Deviance ◽  
History Of ◽  
Semiotic Phenomenology ◽  
Sex Wars

BDSM encompasses a range of practices—bondage and discipline (BD), dominance and submission (DS), sadism and masochism (SM)—involving the consensual exchange of power in erotic contexts. This chapter provides an overview of scholarship on BDSM, drawing on the history of academic studies of the phenomenon, ranging from the psychology of perversion, the sociology of deviance, and the feminist “sex wars” to more recent ethnographic and phenomenological turns. The chapter focuses on the importance of discourse and affect for making sense of BDSM, both for those who seek to analyze the phenomenon and for practitioners themselves. Drawing on ethnographic research and other data, the chapter shows how language and discourse are key to answering interconnected questions about the semiotics and phenomenology of BDSM (what these practices mean and how practitioners experience these practices affectively). Thus, a potential “linguistic turn” in BDSM studies is essential for future research on this erotic minority.

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