Psychology Research Methods • The general investigative purpose of a psychology study (why the researcher has decided to conduct an investigation) is called its aim. • A hypothesis is a precise and testable statement of what the researcher predicts will be the outcome of the study. In an experiment this is called the experimental hypothesis. • In a correlational study the hypothesis is called a research hypothesis‚ and it will predict a relationship between two variables. • A research
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- IV causation DV Example of a good experiment Random assignment to groups - expt grp --> pre test --> expt treatment --> post test - control grp --> pre test --> post test Is yawning contagious? Random Sampling and Random Assignment One time of randomization‚ splitting process will have another randomization To avoid bias Replicable Why we need expt and control grp Need to ensure similarity btw the personal characteristics of the control and expt grp Is it the IV tht cause the changes
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Steps of The Scientific Method The Question Your science fair project starts with a question. This might be based on an observation you have made or a particular topic that interests you. Think what you hope to discover during your investigation‚ what question would you like to answer? Your question needs to be about something you can measure and will typically start with words such as what‚ when‚ where‚ how or why. Background Research Talk to your science teacher and use resources such as books
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criterion referenced tests and norm referenced tests in the teaching and learning process Introduction According to Van der Linden (1982)‚ the rise of new learning strategies has changed the meaning of measurement in education and made new demands on the construction‚ scoring‚ and analysis of educational tests. Educational measurements satisfying these demands are usually called criterion-referenced‚ while traditional measurements are often known as norm-referenced. Thus‚ educational tests can be categorised
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aqueous) by Automatic Potentiometric Titrator Standard JIS ASTM ISO K 0070 D 5558 3657 Standard Test Method for Fat and Oil 1.Abstract Saponification value is expressed by potassium hydroxide in mg required to saponify one (1) gram of fat. It depends on the kind of fatty acid contained in the fat. Measurement of saponification value is performed according to the below listed official test methods. Here we test a sample of fatty acid. The sample is first saponified by adding 0.5mol/L potassium hydroxide
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Research Methods Experimental research is a type of research that is used in behavioral health. Participants are randomly assigned to one of two (or more) conditions. The fact that participates are randomly chosen gives the researcher a better knowledge of the differences that occur when between the groups after exposure to the conditions and can be inferred to be a result of the effects of the conditions (Straub‚ 2012). The actual description to experimental research is commonly used in sciences
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To Test Charles’ Law and estimate Absolute Zero In this IB Lab you will be assessed on the following criterion Conclusions and Evaluation Aim: Physics has many hundreds of laws and these can be tested in experiments to see if they are true. In 1787 the French scientist‚ J.A.C. Charles‚ published a law connecting the volume and temperature of gases. Your task is to see if you agree with his law. Another thing you have to consider is “ is my experiment accurate enough to prove or disprove the
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tcvn Vietnamese Standard TCVN ……..: 2010 Thermopplastic Pipe and Fittings for Fire Protection Services Requirements and Test Methods HA NOI – 2010 Establishment Project and Revisions for Vietnamese Standard (TCVN) 1. Standard name: Thermoplastic pipes and fittings for Fire Protection Service – Requirements and Testing Methods. TCVN Revision (code number‚ standard name): Accepting Standard: (Code number must be written clearly in Vietnamese corresponding with
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Discuss what is meant by mixed-methods designs. What are the limitations of these designs? Researchers have controversies and arguments about the validity of various research designs and approaches. Qualitative studies may have strong internal validity‚ but questionable external validity (Burns‚ Grove‚ & Gray‚ 2011). A single approach to measuring a concept may be inadequate to justify a claim that it is a valid measure of a theoretical concept. Qualitative data use open ended questions‚ Quantitative
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Experiment # 1 Date: 18/12/13 Title: Chemical Properties of Alkanes. Aim: To test the reactivity of alkanes using cyclohexane as an example. Apparatus/Materials: Cyclohexane‚ liquid alkane‚ aqueous bromine‚ test tubes‚ light source‚ watch glass‚ splint‚ 0.1 MKMnO4‚ concentrated H2SO4‚ dilute H2SO4. Method: Combustion: 1. A watch glass was placed on a benched protection sheet in a fume cupboard and the extractor in the fume on. 2. 4 drops of cyclohexane was placed on the watch glass using
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