Fill in the Blanks Research methods in psychologyOnline version Chapter 2 revision by Candy Lynn 1 A is a tentative statement about the relationship between two or more variables . A is a periodical that publishes technical and scholarly material , usually in a narrowly defined area of inquiry . The purpose of research is to understand and interpret social interactions . research aims to test hypotheses , assess cause - and - effect relationships and make predictions . An variable is a condition or event than an experimenter varies in order to see its impact on another variable . The variable is the variable that is thought to be affected by the manipulation of the independent variable . research is a type of descriptive research that involves asking a large sample of people questions about their perceptions , attitudes and behaviour . The is defined as the middle value of all given observations arranged in numerical order . The is the difference between the highest and lowest values in a data set . occurs when the researcher withholds information from the research participants about the true ( or full ) intention of the study . is the repetition of a study to see if the same results can be achieved .
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