External validity

(2016), the WJ III DRB test 's validity depends on two factors: 1) how closely its norming sample represents the population to which the test results will be compared, and 2) how carefully the data were gathered from that sample. However, diagnoses of ADHD using tests of cognitive ability, like the Woodcock-Johnson III, have primarily relied on mean differences between individuals with and without ADHD. Until the current investigation, only three discriminant validity studies had explored the…

Validity looks to see if a test measures what it is supposed to measure and if the test does not then it is not valid and should not be used. There are numerous types of test validity discussed in this chapter, but the one that stuck out to me the most was face validity. Face validity just looks to see if the test looks like what it is supposed, but it is important to remember that just because…

sample is a threat to the external validity of the study. It is important to note that this study does not represent a homogenous group. The sample is considered to be a convenience sample and cannot be echoed as a representative of the Latino immigrant community. Overgeneralization needs to be prevented because the sample does not represent an entire community. Therefore, the lack of generalization is a threat to external validity. However, the studies external validity can be adequate even if…

A study has shown that Internet appearance exposure and magazine reading exposure were correlated with higher internalization of thin ideals, appearance comparison, weight dissatisfaction, and drive for thinness in adolescent girls of mean age of 14.9 years. (Tiggemann & Miller, 2010). As mentioned in lecture, an average American watches 5.13 hours TV per day. (K.Dalrymple, personal communication, October 26,2015). This data shows that television is a dominant media that plays a great deal in…

the issue of generalizing results from WEIRD participants to other populations arises. As we learned in Dr. Cheung’s class, this privileged demographic represents only about 12% of the world’s population, therefore limiting the potential for external validity, as it is a non-representative sample. In discussing the recruitment of participants, this also calls into question their other method of recruiting test subjects: online advertisements. This recruitment led to sampling bias, in which some…

Brief Summary of study In this article, the authors conducted an experimental study to examine the effect of three different interventions on reducing the domestic assault. The three interventions were arrest, ordering the offender to leave the house, and providing advice. These three interventions were given randomly to 33 officers (some of them did not continue the study which made the researchers to gather more officers) who attended workshops to be prepared to this study. After the…

Research has stated that animals must be exposed and frequently involved in intense social interaction for facial recognition to occur. However, recent research has suggested that orangutans can differentiate between individuals with much less interaction required. The orangutans spend the majority of their time alone. It is estimated they spend 5% of their time associated in social situations. Additionally, very little is known about how the orangutans recognize faces in specific situations…

series of decisions, and this is not done unless it can be trusted in this product, since this trust will not be completed unless it was approved these lists party neutral external body which examines critically orderly and accurate data on the phenomenon of these rules and give an impartial professional opinion about the validity of such data and the legitimacy and…

1. What background information should a recruiter have before beginning to recruit job seekers? As a job seeker in today’s competitive market, you should have a few things before heading out in search of a new recruiting job. Following these three tips can help you in getting your new job. 1- Business cards – It is important to have business cards available to pass out anytime. Have them on you at all times. You never know when an opportunity will present itself. If you are not presently…

There are two different groups of participants in the study who were chosen for the study arbitrarily. The goal of the study was to find the best way to help students learn better. The researcher chose to use quizzes that were given on a weekly basis. Since the quizzes are only a very small part of the students ' final grade, it is more logical to conclude that the investigator would use the exams that were given to the students as a better measure of student learning than their marks on the…