Experimental Research Design 2011 The effects of an antidepressant medication on reducing symptoms of Major Depressive Disorders in males and females‚ ages 18 – 25‚ who have been diagnosed with Major Depressive Disorders and live in Pinellas County‚ Florida. Major Depressive Disorders is based on the patient’s self-reported experiences‚ behavior reported by relatives or friends‚ and a mental status examination. With the variety of antidepressant medications and the ranges of doses‚ it becomes
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EXPERIMENTAL DESIGN - BIOLOGY Bromelain Name: Jaroslava Baranová Candidate number: 000771- Examination session: May 2012 Date of elaboration: 2.2.2011 Research question: What is the effect of enzyme bromelain contained in pineapple on the process of gelatinization of gelatine? Hypothesis: Enzymes are proteins that speed up or catalyze chemical reactions. Gelatine consists of gelatin(84-90%)‚mineral salts(1-2%) and water‚ and is free of fat cholesterol. Gelatin is a protein
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new concrete mix. Variations in the setting time can be expected from day-to-day changes in temperature and humidity and also from different workers who prepare the test molds. To eliminate this extraneous sources of variation‚ a 5x5 Latin square design was used in which the Letters A-E represent 5 additives. The setting times‚ in hours‚ for the 25 molds are shown in the table: Table here: WORKER 1 2 3 4 5 1 D 10.7 E 10.3 B 11.2 A 10.9 C 10.5 2 E 11.0 C 10.5 D 12.0 B 11.5 A 10
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checking if our questions/hypotheses are: explicit(no hidden assumptions)‚ logical‚ testable Planning phase 2. selecting research design selecting data collection strategy Decision cycle: 1. what would be an optimal solution in terms of selecting research design? 2. what are the resources? 3. assessing feasibility 4. determining the trade-off’s Basic criteria of research design selection 1. credibility - our conclusions should be supported in a valid way 2. Utility - we will be able to address the questions
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IMC revolutions Whats the sense in using mass media for everyone? It is much easier‚ not effective. The entire industry has changed‚ advertising agency: The Traditional Structure. In the 80s‚ later on in the 90s‚ some mega groups of advertising groups or marcom groups have developed : WPP‚ biggest one. WPP- own fully dozens of companies‚ some of them are doing advertising and some are doing digital marcom‚ some are doing PR Now they can provide a one stop shop for their clients‚ for the client
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Psychologists conduct three main types of research: experimental‚ correlational‚ and clinical. The experiment is an investigation seeking to understand relations of cause and effect. The experiment changes a variable‚ or a cause‚ and measures how it changes the other variable in the experiment (effect). Concurrently‚ the investigator of the experiment tries to hold all other variables constant so he/she can attribute any changes to the manipulation. The manipulated variable is called the independent
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any real-life issues based on one of these theories and then design an experiment to test your hypothesis. When you work on this assignment‚ try to think of and answer the following questions: What is your hypothesis? What are your independent variable (IV) and dependent variable (DV)? How will you manipulate your IV (i.e. what is your treatment) and how will you measure your DV? What are your experimental and control groups? What are the possible confounding variables
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subjects are tested one or more times after initial testing. Typically‚ subjects are assigned randomly to an experimental group (e.g. a group that performs a specific type of training) and a control group after the initial testing. Both the experimental and the control groups are tested again simultaneously one or more times during the period of the study. In this way‚ the effects of an experimental procedure can be measured over a period of time A longitudinal study is a correlational research study
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Chapter 09 Presentations - Report Writing The experimental research method (“Cause and effect relationship”) - This is a systematic and scientific approach to research in which the researcher manipulates one or more variables‚ controls and measures any change in other variables. Quasi-experiment (similar to experimental method‚ but lack some internal validity) Quasi-experimental design involves selecting groups‚ upon which a variable is tested‚ without any random pre-selection processes.
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in the goal. The cause of the client’s improvements must be due‚ at least in part‚ to the worker’s intervention. 4. What the heck is an extraneous variable or influence? Influences that are not fully controlled in either pre-experimental or quasi-experimental designs. 5. The baseline is a measure taken prior to the implementation of an intervention. 6. What do a comparison group and a control group have in common? Both groups receive intervention 7. What is internal validity? Addresses
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