Robert F Dedrick
Biographic Data
| ID | 4137078 |
|---|---|
| NAME | Robert F Dedrick |
| GIVEN NAMES | Robert F |
| FAMILY NAME | Dedrick |
| SIGNATURE | DEDRICK R F |
| AFFILIATIONS | University of South Florida |
| ORCID | 0000-0001-5696-750X |
| VERIFIED | Yes |
| TOTAL WORKS | 19 |
| TOTAL CITATIONS | 40 |
| AUTHOR COUNT | 19 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1990 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 3 |
Development of a New Multidimensional Resiliency Measure
With the widespread use of preventive science frameworks in schools, these settings have become prominent contexts in providing youth with supports through programs that promote resilience. Increasing resilience in students is linked to positive outcomes; however, existing assessment practices for resilience have multiple limitations. This study aimed to develop a multidimensional resiliency measure through a rigorous, multi-stage process that in…
Testing Measurement Invariance over Time with Intensive Longitudinal Data and Identifying a Source of Non-invariance
Longitudinal measurement invariance (LMI) is a critical prerequisite to assessing change over time with intensive longitudinal data (ILD). For LMI testing with ILD, we propose cross-classified factor analysis (CCFA) to detect non-invariant item parameters and alignment optimization (AO) to detect non-invariant time points as a supplement to CCFA. In addition, we use a covariate in CCFA to identify a source of non-invariance. To evaluate the propo…
Associations Between Multiple Health‐Promoting Behaviors and Subjective Well‐Being in High School Age Youth
BACKGROUND: Conceptualizations of health have expanded to include indicators of adolescents' physical and mental wellness, rather than solely the absence of diseases or disorders. Although extensive research has identified links between mental and physical wellness, few studies have investigated the relationship between health promotion and happiness, particularly in adolescent populations who may be at particular risk for engaging in health-comp…
Content and internal structural validity of the motivation for mathematics abbreviated instrument
This study details the development and initial validation of a 16-item psychometric instrument measuring college students’ motivation for mathematics. The Motivation for Mathematics Abbreviated Instrument (MMAI) consists of four factors (intrinsic motivation, mastery orientation, performance orientation, and expectancy) that were derived from three predominant motivation theories: self-determination, achievement goal, and expectancy value. The in…
Testing Measurement Invariance Across Unobserved Groups
Factor mixture modeling (FMM) has been increasingly used to investigate unobserved population heterogeneity. This study examined the issue of covariate effects with FMM in the context of measurement invariance testing. Specifically, the impact of excluding and misspecifying covariate effects on measurement invariance testing and class enumeration was investigated via Monte Carlo simulations. Data were generated based on FMM models with (1) a zero…
A randomized controlled trial of interleaved mathematics practice
We report the results of a preregistered, cluster randomized controlled trial of a mathematics learning intervention known as interleaved practice. Whereas most mathematics assignments consist of a block of problems devoted to the same skill or concept, an interleaved assignment is arranged so that no 2 consecutive problems require the same strategy. Previous small-scale studies found that practice assignments with a greater proportion of interle…
Factor Structure and Measurement Invariance of the Irrational Beliefs Inventory for University Students in the United States and Iceland
We used multigroup confirmatory factor analysis to evaluate the five-factor measurement model underlying the 50-item Irrational Beliefs Inventory (IBI) in samples of university students in the United States ( n =827) and Iceland ( n =720). Global model fit was marginally acceptable in each sample. Further analyses identified several sources of model misfit that included weak factor loadings, several item pairs with correlated errors, and items wi…
Depression, anxiety, and posttraumatic stress as predictors of immune functioning
Youth living with HIV (YLWH) face significant mental health problems, namely depression, anxiety, and PTSD with rates of these disorders higher than in the general population. This study explored the relationship between symptoms of depression, anxiety, and PTSD and biological markers among a sample of 145 YLWH ages 13-25 years. Participants completed the Center for Epidemiologic Studies Depression Scale (CES-D), Generalized Anxiety Disorder-7 It…
A Multilevel Bifactor Approach to Construct Validation of Mixed-Format Scales
Wording effects associated with positively and negatively worded items have been found in many scales. Such effects may threaten construct validity and introduce systematic bias in the interpretation of results. A variety of models have been applied to address wording effects, such as the correlated uniqueness model and the correlated traits and correlated methods model. This study presents the multilevel bifactor approach to handling wording eff…
Multilevel Factor Analysis
We provide reporting guidelines for multilevel factor analysis (MFA) and use these guidelines to systematically review 72 MFA applications in journals across a range of disciplines (e.g., education, health/nursing, management, and psychology) published between 1994 and 2014. Results are organized in terms of the (a) characteristics of the MFA application (e.g., construct measured), (b) purpose (e.g., measurement validation), (c) data source (e.g.…
Associations between individual and relationship characteristics and genital herpes disclosure
Disclosure is often a challenge for individuals living with genital herpes. This study explores determinants of genital herpes disclosure with one's most recent sexual partner using an online questionnaire ( n = 93). The majority of participants reported (80.4%) disclosure. Among non-disclosers, fear of negative partner reactions was the primary reason for non-disclosure. Age, relationship commitment, time in relationship, and expectations of par…
Development and validation of the Sociocultural Attitudes Towards Appearance Questionnaire-4 (Sataq-4).
The Sociocultural Attitudes Towards Appearance Questionnaire-3 (SATAQ-3) and its earlier versions are measures designed to assess societal and interpersonal aspects of appearance ideals. Correlational, structural equation modeling, and prospective studies of the SATAQ-3 have shown consistent and significant associations with measures of body image disturbance and eating pathology. In the current investigation, the SATAQ-3 was revised to improve u…
Second-first language acquisition
In this study we investigated adopted Chinese girls' expressive English language outcomes in relation to their age at adoption, chronological age, length of exposure to English and developmental risk status at the time of adoption. Vocabulary and phrase utterance data on 318 girls were collected from the adoptive mothers using the Language Development Survey (LDS) (Achenbach & Rescorla, 2000). The girls, aged 18–35 months ( M =26·2 months, SD =4·…
Experimental Analysis of Question Wording in an Instrument Measuring Teachers’ Attitudes Toward Inclusive Education
An experimental study ( n = 288 general and special education teachers) examining the effects of altering the referent (“students with mild disabilities,” “students with severe disabilities,” or “students with disabilities”) on a four-item scale (Negative Effect of Inclusion) indicated that wording changes had little effect on the scale’s psychometric properties (e.g., factor pattern coefficients). Changes did result in a shift in the mean level …
Special needs adoption from China
Testing the Structure of the Child Behavior Checklist/4-18 Using Confirmatory Factor Analysis
Confirmatory factor analysis (CFA) was used to evaluate the factor structure of T. M. Achenbach's eight cross-informant syndrome scales of the Child Behavior Checklist (CBCIJ4-18) using data generated on a sample of 631 youngsters, ages 8 to 18 years (M= 14.02, SD = 2.39), who had been classified as having serious emotional disturbances. Results of the CFA (overall fit, pattern of factor loadings, and syndrome correlations) support Achenbach's ei…
Procedures for Designing Course Evaluation Instruments
One important consideration in designing instruments to measure students' attitudes about a course or an instructor is the influence of the format of the instrument on students' responses. This study contrasted the effects of randomly distributing the items throughout the questionnaire (personality format) versus grouping the items together from the same dimension (achievement format) on students' end-of-term course evaluations. On the last day o…
The Effect of the Social Organization of Schools on Teachers' Efficacy and Satisfaction
Valerie E. Lee, Robert F. Dedrick, Julia B. Smith, The Effect of the Social Organization of Schools on Teachers' Efficacy and Satisfaction, Sociology of Education, Vol. 64, No. 3 (Jul., 1991), pp. 190-208
Development of the Trust in Physician Scale
Trust is widely acknowledged as an essential ingredient in patient-physician relationships. Given a dearth of situation-specific measures designed to quantify patients' trust in their physicians, we set out to develop an instrument to assess a patient's interpersonal trust in his physician. Findings from two studies are reported describing the development and validation of the Trust in Physician scale. Study 1 of 160 participants provided prelimi…
The Effect of the Social Organization of Schools on Teachers' Efficacy and Satisfaction
Valerie E. Lee, Robert F. Dedrick, Julia B. Smith, The Effect of the Social Organization of Schools on Teachers' Efficacy and Satisfaction, Sociology of Education, Vol. 64, No. 3 (Jul., 1991), pp. 190-208
Special needs adoption from China
Associations between individual and relationship characteristics and genital herpes disclosure
Disclosure is often a challenge for individuals living with genital herpes. This study explores determinants of genital herpes disclosure with one's most recent sexual partner using an online questionnaire ( n = 93). The majority of participants reported (80.4%) disclosure. Among non-disclosers, fear of negative partner reactions was the primary reason for non-disclosure. Age, relationship commitment, time in relationship, and expectations of par…
Development of the Trust in Physician Scale
Trust is widely acknowledged as an essential ingredient in patient-physician relationships. Given a dearth of situation-specific measures designed to quantify patients' trust in their physicians, we set out to develop an instrument to assess a patient's interpersonal trust in his physician. Findings from two studies are reported describing the development and validation of the Trust in Physician scale. Study 1 of 160 participants provided prelimi…
The Effect of the Social Organization of Schools on Teachers' Efficacy and Satisfaction
Valerie E. Lee, Robert F. Dedrick, Julia B. Smith, The Effect of the Social Organization of Schools on Teachers' Efficacy and Satisfaction, Sociology of Education, Vol. 64, No. 3 (Jul., 1991), pp. 190-208
Procedures for Designing Course Evaluation Instruments
One important consideration in designing instruments to measure students' attitudes about a course or an instructor is the influence of the format of the instrument on students' responses. This study contrasted the effects of randomly distributing the items throughout the questionnaire (personality format) versus grouping the items together from the same dimension (achievement format) on students' end-of-term course evaluations. On the last day o…
Testing the Structure of the Child Behavior Checklist/4-18 Using Confirmatory Factor Analysis
Confirmatory factor analysis (CFA) was used to evaluate the factor structure of T. M. Achenbach's eight cross-informant syndrome scales of the Child Behavior Checklist (CBCIJ4-18) using data generated on a sample of 631 youngsters, ages 8 to 18 years (M= 14.02, SD = 2.39), who had been classified as having serious emotional disturbances. Results of the CFA (overall fit, pattern of factor loadings, and syndrome correlations) support Achenbach's ei…
Experimental Analysis of Question Wording in an Instrument Measuring Teachers’ Attitudes Toward Inclusive Education
An experimental study ( n = 288 general and special education teachers) examining the effects of altering the referent (“students with mild disabilities,” “students with severe disabilities,” or “students with disabilities”) on a four-item scale (Negative Effect of Inclusion) indicated that wording changes had little effect on the scale’s psychometric properties (e.g., factor pattern coefficients). Changes did result in a shift in the mean level …
Special needs adoption from China
Second-first language acquisition
In this study we investigated adopted Chinese girls' expressive English language outcomes in relation to their age at adoption, chronological age, length of exposure to English and developmental risk status at the time of adoption. Vocabulary and phrase utterance data on 318 girls were collected from the adoptive mothers using the Language Development Survey (LDS) (Achenbach & Rescorla, 2000). The girls, aged 18–35 months ( M =26·2 months, SD =4·…
Development and validation of the Sociocultural Attitudes Towards Appearance Questionnaire-4 (Sataq-4).
The Sociocultural Attitudes Towards Appearance Questionnaire-3 (SATAQ-3) and its earlier versions are measures designed to assess societal and interpersonal aspects of appearance ideals. Correlational, structural equation modeling, and prospective studies of the SATAQ-3 have shown consistent and significant associations with measures of body image disturbance and eating pathology. In the current investigation, the SATAQ-3 was revised to improve u…
Multilevel Factor Analysis
We provide reporting guidelines for multilevel factor analysis (MFA) and use these guidelines to systematically review 72 MFA applications in journals across a range of disciplines (e.g., education, health/nursing, management, and psychology) published between 1994 and 2014. Results are organized in terms of the (a) characteristics of the MFA application (e.g., construct measured), (b) purpose (e.g., measurement validation), (c) data source (e.g.…
Associations between individual and relationship characteristics and genital herpes disclosure
Disclosure is often a challenge for individuals living with genital herpes. This study explores determinants of genital herpes disclosure with one's most recent sexual partner using an online questionnaire ( n = 93). The majority of participants reported (80.4%) disclosure. Among non-disclosers, fear of negative partner reactions was the primary reason for non-disclosure. Age, relationship commitment, time in relationship, and expectations of par…
A Multilevel Bifactor Approach to Construct Validation of Mixed-Format Scales
Wording effects associated with positively and negatively worded items have been found in many scales. Such effects may threaten construct validity and introduce systematic bias in the interpretation of results. A variety of models have been applied to address wording effects, such as the correlated uniqueness model and the correlated traits and correlated methods model. This study presents the multilevel bifactor approach to handling wording eff…
Depression, anxiety, and posttraumatic stress as predictors of immune functioning
Youth living with HIV (YLWH) face significant mental health problems, namely depression, anxiety, and PTSD with rates of these disorders higher than in the general population. This study explored the relationship between symptoms of depression, anxiety, and PTSD and biological markers among a sample of 145 YLWH ages 13-25 years. Participants completed the Center for Epidemiologic Studies Depression Scale (CES-D), Generalized Anxiety Disorder-7 It…
A randomized controlled trial of interleaved mathematics practice
We report the results of a preregistered, cluster randomized controlled trial of a mathematics learning intervention known as interleaved practice. Whereas most mathematics assignments consist of a block of problems devoted to the same skill or concept, an interleaved assignment is arranged so that no 2 consecutive problems require the same strategy. Previous small-scale studies found that practice assignments with a greater proportion of interle…
Factor Structure and Measurement Invariance of the Irrational Beliefs Inventory for University Students in the United States and Iceland
We used multigroup confirmatory factor analysis to evaluate the five-factor measurement model underlying the 50-item Irrational Beliefs Inventory (IBI) in samples of university students in the United States ( n =827) and Iceland ( n =720). Global model fit was marginally acceptable in each sample. Further analyses identified several sources of model misfit that included weak factor loadings, several item pairs with correlated errors, and items wi…
Content and internal structural validity of the motivation for mathematics abbreviated instrument
This study details the development and initial validation of a 16-item psychometric instrument measuring college students’ motivation for mathematics. The Motivation for Mathematics Abbreviated Instrument (MMAI) consists of four factors (intrinsic motivation, mastery orientation, performance orientation, and expectancy) that were derived from three predominant motivation theories: self-determination, achievement goal, and expectancy value. The in…
Testing Measurement Invariance Across Unobserved Groups
Factor mixture modeling (FMM) has been increasingly used to investigate unobserved population heterogeneity. This study examined the issue of covariate effects with FMM in the context of measurement invariance testing. Specifically, the impact of excluding and misspecifying covariate effects on measurement invariance testing and class enumeration was investigated via Monte Carlo simulations. Data were generated based on FMM models with (1) a zero…
Associations Between Multiple Health‐Promoting Behaviors and Subjective Well‐Being in High School Age Youth
BACKGROUND: Conceptualizations of health have expanded to include indicators of adolescents' physical and mental wellness, rather than solely the absence of diseases or disorders. Although extensive research has identified links between mental and physical wellness, few studies have investigated the relationship between health promotion and happiness, particularly in adolescent populations who may be at particular risk for engaging in health-comp…
Testing Measurement Invariance over Time with Intensive Longitudinal Data and Identifying a Source of Non-invariance
Longitudinal measurement invariance (LMI) is a critical prerequisite to assessing change over time with intensive longitudinal data (ILD). For LMI testing with ILD, we propose cross-classified factor analysis (CCFA) to detect non-invariant item parameters and alignment optimization (AO) to detect non-invariant time points as a supplement to CCFA. In addition, we use a covariate in CCFA to identify a source of non-invariance. To evaluate the propo…
Development of a New Multidimensional Resiliency Measure
With the widespread use of preventive science frameworks in schools, these settings have become prominent contexts in providing youth with supports through programs that promote resilience. Increasing resilience in students is linked to positive outcomes; however, existing assessment practices for resilience have multiple limitations. This study aimed to develop a multidimensional resiliency measure through a rigorous, multi-stage process that in…
Psychology (16 works) · Social Psychology (9 works) · Statistics (9 works) · Developmental psychology (8 works) · Mathematics (8 works) · Psychometrics (7 works) · Clinical Psychology (6 works) · Confirmatory factor analysis (6 works) · Structural equation modeling (6 works) · Computer Science (5 works)