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This paper covers different types of research designs, like, longitudinal, cross-section and sequential design, experimental design (including factorial experimental design), and correlational design, with illustrative examples. This paper will help a scholar to know how choice of research design depends on a number of parameters, highlighted by author.

We evaluated the best-available evidence for the effects of receiving business-as-usual or naturally delivered special education services in K-12 US schools. Our best-evidence synthesis of 44 empirical studies evaluated which outcome domains and disability types have been investigated and whether findings varied by the rigor of the study design and methods. Regression-based studies comparing students with educational disabilities (SWED) to students without disabilities (SWOD) yielded mostly negative associations of receiving special education with academic achievement, behavior, and long-term or other outcomes. In contrast, regression-based studies that contrasted SWED receiving special education to other SWED not receiving special education produced a pattern of estimates similar to quasi-experimental designs that contrast SWED to SWOD. The most rigorous designs utilized quasi-experimental methods that compared SWED receiving special education services with SWED not receiving special education services, and generally reported more positive than negative evidence of receiving special education services across most outcome domains. Future research that utilizes rigorous quasi-experimental methodology and appropriate comparison groups to investigate the effectiveness of special education is needed, particularly for nonachievement outcome domains.

Adopting the theoretical framework of Rational Emotive Behavior Therapy (REBT; Ellis, 1962, 1994), we examine the cognitive antecedents of functional behavior and adaptive emotions as indicators of emotional intelligence (EI) and test central assumptions of REBT. In an extension of REBT, we posit that adaptive emotions resulting from rational cognitions reflect more EI than maladaptive emotions, which result from irrational cognitions, because the former lead to functional behavior. The results of the first study using organizational scenarios in an experimental design confirm central assumptions of REBT and support our hypotheses. In a second correlational study we replicate the connection between rational cognitions and EI by measuring real person data using psychometric scales. Both studies indicate that irrational attitudes result in reduced job satisfaction.

Little is known about how assistive technology standards have been implemented in preservice teacher preparation. This chapter provides a review of the literature concerning the importance of evidence-based practice and the research base supporting assistive technology in order to set the context for reporting the results of a comprehensive national study of the status of assistive technology state standards for teachers in all of the 50 states (plus Washington, DC). This chapter includes the findings of the study, the research that the study was based upon, and a review of relevant research in the fields of assistive technology, educational technology, and evidence-based practice. Only six states reported having AT standards and six states reported having AT competencies. Three states reported having both standards and competencies, yielding nine unique states (out of 51) with AT standards and/or AT competencies. Regression analyses to determine the relationship between the study variables and national reading and math performance of students with disabilities were inconclusive. The implications of the study findings and recommendations for future research are presented.

To predict the future of the business and implement successful changes, a credit analyst must make quick decisions about the economics and assets of their clients. Because the marketplace is constantly changing, companies that lack the interpersonal skills necessary to communicate with their customers run the risk of falling behind the competition and becoming obsolete. The objective of this research was to assess whether credit analysts in Peruvian banks that used digital resources also improved their communication and interpersonal skills. The study was quantitative in nature, with an applied and correlational design that lacked an experimental component. The sample consisted of 109 credit analysts from four different Peruvian banks (Interbank, Scotiabank, BBVA, and BCP). Two questionnaires were used in this survey; both were submitted to expert review for validation before being submitted for use, and their reliability was determined using Cronbach's alpha. In terms of use of digital resources (59.5%) and mastery of interpersonal skills (61.3%), credit analysts were at the average. Conclusions the p-value for the correlation between credit analysts' use of digital resources and their soft skills in Peruvian banks was less than 0.05, indicating a direct and strong link between these two factors. The Rho correlation coefficient was 0.738.

The overall goal of science is to build a valid and reliable body of knowledge about the functioning of the world and how applying that knowledge can change it. As personnel and human resources management researchers, we aim to contribute to the respective bodies of knowledge to provide both employers and employees with a workable foundation to help with those problems they are confronted with. However, what research on research has consistently demonstrated is that the scientific endeavor possesses existential issues including a substantial lack of (a) solid theory, (b) replicability, (c) reproducibility, (d) proper and generalizable samples, (e) sufficient quality control (i.e., peer review), (f) robust and trustworthy statistical results, (g) availability of research, and (h) sufficient practical implications. In this chapter, we first sing a song of sorrow regarding the current state of the social sciences in general and personnel and human resources management specifically. Then, we investigate potential grievances that might have led to it (i.e., questionable research practices, misplaced incentives), only to end with a verse of hope by outlining an avenue for betterment (i.e., open science and policy changes at multiple levels).