...Introduction December 16, 2013 Senses: its effect on recalling information Memory is the power or process of reproducing or recalling what has been learned and retained especially through associative mechanisms. It is the store of things learned and retained from an organism’s activity or experience as evidenced by modification of structure or behavior or by recall and recognition (Merriam-Webster, 2012). Senses enable us to see, smell, hear and etc. but people usually rely on their eyesight and hearing to remember or recall things. People did not recognize the full potential of our memory, that the other senses also help us to remember and recall things for example of it is the sense of smell which is least recognized. We know the odor of a burning lumber because it is stored in our memory when we encounter it in the past like in cooking so when we smell a burning lumber in our home and we know that our home is made of lumber and none of the members of our family is cooking, we automatically think that our home might be in the process of burning. The sense of smell is a model for the so-called physical sensors used for detecting chemicals in the atmosphere. Like a sound, an odor will intrude upon conscious awareness and affect it as long as the odor is there. The sense of smell constantly and automatically monitors the environment for odors. This monitoring is usually automatic, it is apparent in common experience, to detect odors even when attention is engaged...
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...Single Factor Experimental Design Study: Sleep Deprivation and Test Performance The scientific method provides a standard procedure that enables researchers to conduct scientific research, and facilitates future replication of the experiment for reliability and validity. These steps of the scientific method are as follows: posing a research question, doing background research, constructing a hypothesis, testing the hypothesis by conducting an experiment, analyzing the data and drawing a conclusion, and communicating the results of the study findings (Passer, 2014). The research topic examined in this study is the effects that sleep deprivation has on attention and memory retention, specifically measured by academic test performance. Sleep deprivation...
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...3. MATERIALS AND METHODS 3.1 STUDY DESIGN: The research design of this study is an experimental design. 3.2 STUDY SETTING: Data will be collected for this study from outpatient department (OPD), Department of physiotherapy, Lovely Professional University campus. 3.3 POPULATION AND SAMPLING: The subjects will be taken as planter fasciitis patient, who will be reported in the outpatient department of physiotherapy of Lovely Professional University. SAMPLING METHOD: Convenient sampling. SAMPLE SIZE: The sample size is 60 3.4 SELECTION CRITERIA: 3.41 Inclusion criteria: • Females and Males • Age group between 25-50 years. • Clinically diagnosed plantar fasciitis 3.42 Exclusion criteria: • Subjects with clinical disorders such...
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...permits an objective analysis leading to valid inferences with respect to the stated problem. It is a step in problem solving consisting of a detailed plan to be followed in obtaining the needed data. It specifies what organisms, chemicals, glasswares, and equipment will be used in the study. B. Significance 1. It serves as a guide for direction during the actual experimentation. 2. It allows a gain of maximum information relevant to the problem at minimum cost. 3. It makes the statistical test of significance valid because it takes into consideration all the assumptions that went into deriving the various statistics. C. General Features The design of an experiment depends on the type of research undertaken and the nature of the conditions under which study is done. The design of an experiment is dictated by the question it is to answer. There is no common blueprint that will serve as a guide in writing a research design. Each problem requires its own unique design. A research design contains the following sections: I. Introduction A. Background of the Study B. Statement of the Problem C. Significance of the Study D. Scope and Limitation of the Study II. Review of Related Literature III. Methodology IV. Time Table V. Proposed Budget VI. Bibliography D. Basic Principles The following principles are always in a research design: • REPLICATION • RANDOMIZATION • LOCAL CONTROL. Replication - refers to the...
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...BUSI 600 Liberty University September 20, 2013 Discussion Board Forum 5 This paper will attempt to answer varies questions from chapters nine and ten. The questions asked and answered pertain to ethical problems, experiments and their designs. After reading this paper you should know that there are some ethical issues when it comes to experimental research. You should also understand and become aware of the steps you should take to accomplish a well-planned experiment (Cooper & Schindler, 2011, p.206). There is information about the types of experimental designs and how they are different. Also discussed are the three communication approaches. Question 9.4 What ethical problems do you see in conducting experiments with human subjects? The question of “what ethical problems do you see in conducting experiments with human subjects?” is truly a multi-layered opinionated question that forces a person to ask “what would be the most responsible way society could condone such acts and what could be the worst case scenario?” The first step in analyzing this question is to define ethics. Ethics is defined as “norms or standards of behavior that guide moral choices about our behavior and our relationships with others” (Cooper & Schindler, 2011, p. 32). The key issues of ethics in experimentation relate to benefits, deception, informed consent, debriefing participants, and the right to privacy (Cooper & Schindler, 2011). It is important that the researcher “discuss the study’s...
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...Multiple Choice Questions 1. Which term below refers to a study involving the manipulation of one or more variables to determine the effect on another variable? A) ex post facto B) experiment C) monitoring study D) communication study E) descriptive study Answer: B Level: easy 2. Which variable in an experiment is manipulated by the researcher? A) dependent variable B) extraneous variable C) moderating variable D) independent variable E) mediating variable Answer: D Level: moderate 3. Which variable in an experiment is the variable expected to be affected by the manipulation? A) dependent variable B) extraneous variable C) moderating variable D) independent variable E) mediating variable Answer: A Level: easy 4. All of the following are terms used to refer to an independent variable except _____. A) predictor B) explanatory C) criterion D) all of the above refer to an independent variable E) none of the above refer to an independent variable Answer: C Level: easy Use the following to answer questions 5-9: In the study of bystanders and thieves presented in the text, participants are invited to a store where they see someone steal the purse of another customer. The accosted shopper and the thief are really acting their parts to set the stage for the experiment. Participants view the robbery alone or with another participant. The study sought to determine whether participants were more likely to report...
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...METHODOLOGY This chapter outlined the entire research plan. It described how the study was done, the data, instruments utilized, how samples were selected and the analysis of the data using statistical treatment. Research Design The researchers used the true experimental design. It further used Solomon’s Four Group design which involves two experimental groups and two controlled groups. One experimental group and one control group are administered the pretest and the other groups are not, thereby allowing the effects of the pretest measure and intervention to be segregated. In this study there were two groups who were studied: a group who studies alone and a group who studies with a group, this design is a combination of pretest and post test controlled group design, and the post test only controlled group design, in addition to the basic pretest/treat/posttest design three additional test, one without treatment, one without pretest, and one without both pretest and treatment were considered. For a reliable result several sets of four tests were applied and the means used. The various combinations of tested and untested groups with treatment and controlled groups allow the researchers to ensure that confounding variables and extraneous factors have not influenced the results. | |Pre-test |Treatment |Post test | |Experimental with pre-test |O1 |X |O2 | |Controlled...
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...Mba 1st executive communication Sec b 11. Ex post facto design is a quasi-experimental study examining how an independent variable, present prior to the study, affects a dependent variable. So like we just said, there is something about the participant that we're going to study that we don't have to alter in the participant. We will make this a little clearer a little later with some examples and descriptions. But first, quasi-experimental simply means participants are not randomly assigned. In a true experiment, you have what is called random assignment, which is where a participant has an equal chance of being in the experimental or control group. Random assignment helps ensure that when you apply some kind of condition to the experimental and control groups, there isn't some predisposition in one group to respond differently than the other. A true experiment and ex post facto both are attempting to say: this independent variable is causing changes in a dependent variable. This is the basis of any experiment - one variable is hypothesized to be influencing another. This is done by having an experimental group and a control group. So if you're testing a new type of medication, the experimental group gets the new medication, while the control group gets the old medication. This allows you to test the efficacy of the new medication. Ex post facto designs are different from true experiments because ex post facto designs do not use random assignment. True experiments have random...
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...CHAPTER ONE Really statisticians do not perform experiments but majorly depends on the data collected. To be specific, experiments can be defined as an act of operation undertaken in order to discover the hidden principle effect and test, establish and illustrate the unknown truth. Generally, researchers carry out the experiments in order to accept or reject certain hypothesis. Experiments are conducted to establish tht effect of one or more in dependent variables in a response, which is dependent variable. These independent variables are often called treatments or factors. Examples are different fertilizers, different makes of machines and different advertisement channels. The values of a response are supposed to reflect the effect of different treatments. If an experiment is to be carried out on a particular project, the objective of the experiment must be clearly stated, unless the objective of tge experiments must be clearly stated, unless the objective of the project is carefully identified, the most appropriate design may not be adopted. The main aim of this project is to use the collected data to investigate the effect of different levels of nitrogen fertilizers on the fertilizers on the yield of maize and sugar beet separately using analysis of variance (ANOVA) method at the institute of agricultural research Akure It should be noted that the data used here is secondary data. Fertilization has to do with the aim of bringing about an increase in crop yield and consequently...
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...domain of science. —Wilhelm Wundt, 1874 PREVIEW AND CHAPTER OBJECTIVES Chapters 2 and 3 describe the context out of which modern psychology emerged in the nineteenth century. Philosophers, interested in the same fundamental questions about the human mind and behavior that occupy psychologists today, began to speculate about the need to examine these issues scientifically. At least one nineteenth-century British philosopher, John Stuart Mill, even proposed the development of a scientific psychology. Meanwhile, physiologists and physicians in Europe made great strides in furthering our understanding of the physiology of the nervous system and, in particular, of the brain. This chapter examines how this experimental physiology combined with philosophical inquiry to create a new experimental psychology in Germany in the late nineteenth century. The chapter opens with a brief discussion of some aspects of German education that made it attractive to American students, and then continues with a look at how Gustav Fechner’s psychophysics provided a standardized set of methods for studying sensory thresholds. The creation of the ‘‘New Psychology’’ and its first laboratory by Leipzig’s Wilhelm Wundt forms the focus of the middle of the chapter. The chapter ends with consideration of three other important German psychologists, Hermann Ebbinghaus, G. E. Muller, and Oswald Kulpe. After you finish this chapter, you ¨ ¨ should be able to: ■ ■ ■ ■ ■ ■ Describe the philosophy of education in Germany...
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...Michael Ayala 5/12/12 Psych 1 Assessment 1 Essay In the the first example, the researcher used the experimental design in his study to examine how poeple respond to pictures of faces with different racial features. The experimental design is when the experimenter isolates and controls all the variables excpet one, he makes sure that variable is the only one causing the desired effect. The The independent variable, which is the variable that the researcher is manipulating, is computer program that he created that will randomly generate the faces as each subject comes in. In this study the researcher used random assignment as the the subject would come in the the room. Random assignment is went the experimental and control groups a non-systematic and randomized way. The way he did this is by not telling his research nor the subjects knew which order they were going in. The team of researchers that found that the more time students spend interacting with technology, the less empathy they show towards other by doing a correlation study. Since many students already use technology a lot this was would be easier to use. The students increased use of their devices is one variable and their lower empathy towards other is the second one making a negative correlation. A negative correlation is a correlation indicating that the variables simultaneous in opposite directions. The second researcher...
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...Question 6. Many drug safety research studies are sponsored by pharmaceutical companies that would financially benefit if the results of the study are favorable. Is this an example of a potential confounding factor? A confounding factor is an important difference between the two groups you are comparing, other then the one you’re primarily interested in. With regards to this question, there would most likely be two groups involved in the experimental study: the control group and the treatment group. The control group would receive a placebo while the treatment group was administered the drug. Because the sponsoring pharmaceutical most likely has a personal interest in the success of the drug, and hence a desirable effect from the treatment group. The confounding factor may be how and who the participants were chosen for the study. People who may be interested in being a part of the study may have a pre-existing condition that the drug will help. In other words, a drug company is not going to have a clot-relieving drug tested on people with no pre-existing clot issue as the drug would not be isolating the issue it is intended to mediate. Yes, the relationship of the sponsor (pharmaceutical company) to the study is a confounding factor and inherently causes bias and inaccuracies within the study. 13. Below are some data from 2005 for on-the-job deaths in dangerous jobs. Which job seems the most dangerous? Which seems the least dangerous? Explain. Fishers and fishing workers...
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...University of Phoenix Material Experimental Designs Worksheet Fill in the Blank Using the terms listed below, complete the following: 1. Experimental group receives treatment in an experimental design. 2. Control group does not receive treatment in an experimental design. 3. A Small n design has many observations on a single case or a few subjects. 4. When separate groups of subjects receive different levels of the independent variable, this is referred to as Between Subject design. 5. When all subjects receive all levels of the independent variable, this is referred to as Within Subject design. 6. When the researcher measures a behavior that needs to be changed and then applies therapy and measures the behavior again, this is referred to as AB design. 7. When the researcher measures a behavior that needs to be changed, applies therapy and measures the behavior again, and then removes the treatment and measures the behavior again, this is referred to as ABA design. 8. When the criterion outcome changes over time this is referred to as Changing Criterion design. 9. When measuring several behaviors or several people with baseline periods of varying lengths and an independent variable occurs, this is referred to as a Multiple Baseline design. 10. When subjects are not randomly assigned and not all variables are under the control of the presenter, this is referred to as Quasi-Experimental design. A. Multiple Baseline...
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...perfect world, all research would do this and the results of research would be accurate and powerful. In the real world, however, this is rarely the case. We are often dealing with human subjects, which in itself confounds (puzzles) any study. We are also dealing with the restraints of time and situation, often resulting in less than perfect conditions in which to gather information. There are three basic experimental designs, each containing subsets with specific strengths and weaknesses. These three basic designs include: (1) pre-experimental design; (2) quasi-experimental design; and (3) true experimental design. They will be discussed below and as you will discover, are addressed in order of effectiveness. Pre-Experimental Design Pre-experimental designs are so named because they follow basic experimental steps but fail to include a control group. In other words, a single group is often studied but no comparison between an equivalent non-treatment group is made. Examples include the following: The One-Shot Case Study. In this arrangement, subjects are presented with some type of treatment, such as a semester of college work experience, and then the outcome measure is applied, such as college grades. Like all experimental designs, the goal is to determine if the treatment had any effect on the outcome. Without a comparison group, it is impossible to determine if the outcome scores are any higher than they would have...
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...EXPERIMENTAL DESIGNS FOR RESEARCH Causality Experimental Designs Control Group Pre-test/Post-test Design Threats to Internal Validity Threats to External Validity Post-Test only Control Group Design CAUSALITY To establish whether two variables are causally related, that is, whether a change in the independent variable X results in a change in the dependent variable Y, you must establish: 1) time order--The cause must have occurred before the effect; 2) co-variation (statistical association)-- Changes in the value of the independent variable must be accompanied by changes in the value of the dependent variable; 3) rationale-- There must be a logical and compelling explanation for why these two variables are related; 4) non-spuriousness-- It must be established that the independent variable X, and only X, was the cause of changes in the dependent variable Y; rival explanations must be ruled out. To establish causality, one must use an experimental or quasi-experimental design. Note that it is never possible to prove causality, but only to show to what degree it is probable. EXPERIMENTAL DESIGNS True experimental designs include: Pre-test/Post-test control group design Solomon Four-Group design Post-test only control group design Pre-test/Post-test control group design This is also called the classic controlled experimental design, and the randomized pre-test/post-test design because it: 1) Controls the assignment of subjects to...
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