Construct validity

The fair and valid assessment of ELL students is among the top priorities on the national educational agenda (Francis, Rivera, Lesaux, Kieffer &Rivera, 2006). States are required to provide an annual academic assessment of English language proficiency and assure the monitoring of students’ English language development. These new mandates have generated significant challenges for states with respect to standards and test development; test validity; and accountability policy development and implementation (GAO, 2006; Zehr, 2006; Abedi, 2004; Crawford, 2002). There are several major concerns of English language proficiency assessments, first and foremost is the test validity, second the cultural bias of the assessments, third the nonstandard administration and fourth the assessment does not pair with…

matches severity indices o Recognizing it fits into literature • Continued literature review o Key words: Vanderbilt, ADHD, validity o Articles I narrowed down  Psychometric Properties of the Vanderbilt ADHD Diagnostic Parent Rating Scale in a Referred Population (Wolraich et al., 2003) • Internal consistency and factor structure = acceptable, consistent with DSM-IV • Good reliability  The Psychometric Properties of the Vanderbilt ADHD Diagnostic Parent Rating Scale in a Community Population…

Validity is important in determining how accurate the research is. Construct validity is a type of validity that shows whether or not the test used to measure a trait actually does measure it. It is difficult to measure traits as they are not physical objects that one could measure, therefore it is important for a researcher to find construct validity to ensure that their survey or experiment or other form of test does in fact measure the intended trait. To show that a measure of a trait has…

the topic. Plausible Alternative Explanations of the Results One of the most influential and problematic issues was found in this study is the attrition of the officers. The study began with 33 officers but around half of them stopped attending the meeting and turning cases which forced the authors to add 18 officers. The study was designed to gather around 300 reports (cases) in 12 months; however, with this issue it lasted around 18 months. It is known that the attrition problem can lead…

Tests need to be accurate (i.e. valid) for the researcher to know the test can be trusted. Tests have a concept or framework that guide what the test is supposed to measure. Construct-based validity evidence is used to measure to the degree that the test is measuring that construct. This type of validity has two subparts: discriminant validity and convergent validity. When constructs are not supposed to be related, discriminant validity checks to see if they are in fact unrelated. On the other…

Appendix B). Validity and Reliability An instrument is valid when it measures the construct it was designed for, and reliable when an instrument can consistently produce the same results over time, across different situations (Field, 2003). Content validity is an evaluation of the relationship between the items and the construct being measured (Cook & Beckman, 2006) and can be done in two ways. Firstly, a thorough revision of the construct would be required to avoid any ambiguities when…

Validity speaks to the magnitude to which the interpretations of test scores are grounded in theory and evidence. Validity is one of the most fundamental things to think about when evaluating psychological test. The question of validity can be expressed from three different perspectives, purpose of the test, the form the test comes in and the population being served. Therefore, researchers should never say “the test is valid.” Instead, researchers should state that the test is valid enough…

Validity in Research When planning research, scholars must consider many factors. Two such factors are is the measure of the construct valid and will the specific measure of the construct result in reliable data (Trochim & Donnelly, 2008). Take for example a study to determine the effectiveness of a specific Attention Deficit Disorder (ADD) medication for children ages 8-14 who are diagnosed with ADD, where the researchers yield consistent results for each participant for each dosage for the…

my instrument as needed. Each member in my group expressed their thoughts about my instrument, and provided educational feedback based on what was taught in class meetings and examples from our textbook. The items on my survey instrument needed to be adjusted to a 5 point scale using the Likert-type scale. The score ranges for each of the constructs was 1-Strongly Agree, 2-Agree, 3- Neutral, 4-Disagree, 5-Strongly Disagree. The changes made in my instrument are based on my peers’ feedback.…

A model which parallels numerous symptoms of human depression is considered important. It is well known that animal models should share phenomenological similarities isomorphism with the human pathology to be modeled. In other words we can say that it is phenomenological similarities between the behavior shown by the animal model and the particulars symptoms of the human condition (Geyer and Markou 1995; Moreau 2002; Lyon 2004) .The face validity of animal model of depression is a determination…