Experimental and Ex-Post Facto Research

The main difference between 'Laboratory Experiment' and 'Field Experiment' is in

• Precision in measurement of variables

• Degree of control of extraneous variables

• Use of data analysis techniques

• Application of research instrument

An investigator intends to establish the relationship between educational status of mothers and academic achievement of students for coastal areas. Which of the following methods will be helpful in terms of research design?

• historical method

• survey method

• experimental method

• Ex- Post Facto method

the variables manipulated by the researcher in an experiment is called the

• response variable

• independent variable

• dependent variable

• extraneous variable

In order to ensure that the impact on dependent variable is only due to independent variable, which of the following methods will be more appropriate?

• descriptive method

• experimental method

• field study

• Ex- Post Facto research

A researcher conducts an experimental study by imposing several controls in respect of samples, data collection tools and situational variables. The likelihood of threat in arriving at generalization in this context will be to:

• internal validity

• external validity

• Both A & B

• Neither A & B

A researcher wants to study whether discovery learning procedure has an impact on the motivation of students. In this situation, the variable motivation will be labelled as

• intervening variable

• independent vaiable

• dependent variable

• Extraneous variable

A distinctive feature insisted in experimental design in research is

• cause and effect relationship

• control of intervening variables

• complex statistical treatment of data

• manipulation of independent variable

An investigator wants to study the effect of gender on attitude towards internal evaluation by using two groups of students. The nature of this study would be:

• Descriptive survey study

• Experimental study

• causal comparative

• corelational study

An investigator uses two matched groups to compare effectiveness of two methods of teaching science . This study would come in the ambit of:

• experimental research

• causal comparative research

• descriptive research

• corelational research

An investigator conducted a study to examine the effect on attitude towards dowry system. The nature of this study was

• phenomenological study

• experimental study

• causal comparative study

• co relational study