Psy 335 Experimental Designs Worksheet Essays

1. Dependent Variable HR, SV, BP 2. Independent Variable level of activity 3. Controlled Variables age, gender

1. The researchers analyzed the data they collected as though it were at what level of measurement?- The correct answer is Interval/ratio.

2. Identify all of the major dependent and independent variables and the level of measurement for each variable

B. The subjects I would use for my research proposal would be male and females between the ages of 25-60. I would like to see people who were in relatively good health before the treatment and may have opted to take the treatment as a preventative measure. While social status will not be an issue I would

An experiment from students measured their performance from what they were doing. However, there were two different people that were separated, E and S. Each individual, which was E and S; they both worked according to the plan for this experiment. There were twelve spools in

Criteria #11 – The study provides both point measurements and measurements of variability for at least one key outcome?

5d. The study tries to control extraneous variables by randomizing the subjects into groups A and B by a randomized computer generator. This was done because subjects were their own

3.  your proposed methodology. Be sure to specify, where appropriate, dependent and independent variables, controls if applicable, and the data you will collect

Multiple independent variables and multiple levels of independent variables differences are illustrated below. Multiple independent variables helps in executing more complicated research innovatively with the standard code of practice and each variables are determined effectively which also helps in understanding the each variable effects and interaction between them consequently. Multiple treatments can be done by accessing each independent variables (Abbas & Benchohra, 2013). These operation are not equally restricted. An experimentation with multiple independent variables could have solitary or additional

7) Name the research design likely used in this study? (correlational/experimental) Experimental, the researcher manipulated all the variables, and had all the control.

There were two laboratory experiments involved in the study, which both acquired the same independent variable, the verb embedded within the question. However, the dependent variable in Experiment 1 was the subjects’ speed estimate and the dependent variable in Experiment 2 was if the subject thought they saw glass. Both experiments were an illustration of independent measures design.

An independent groups design, commonly referred to as a between subjects design, involves placing participants, exclusively, into one of two levels of an independent variable (“Repeated measures vs independent groups,” n.d.). That is, each condition of the experiment has a different group of subjects (McLeod, 2007). Often, one group of subjects undergoes the experimental treatment while the other undergoes a control condition. After the experiment is complete, an independent samples t-test is usually conducted to see if there is a statistical difference in the dependent variable(s) between the two groups. Subjects should be chosen at random. This is to ensure that each subject has the same likelihood of being assigned either experimental condition

The levels of measurements that variables can take are: (1) scale or continuous; (2) ordinal; (3) nominal; (4) interval; (5) Dichotomous; (6) Ratio.

Before conducting a statistical analysis, every researcher needs to measure the depended variable. The measurement depends on the type of variable. Different types are measured differently. So, the researcher has to decide on the appropriate scale of measurement. There are typically four levels of measurement: nominal, ordinal, interval, and ratio.

a. May be used to adjust the degrees of freedom for the averaged tests of significance. Corrected tests are displayed in the Tests of Within-Subjects Effects table.b. Design: Intercept Within Subjects Design: Time