Five Research techniques

testing through changing independent variables to see its effect on dependent variables.

a powerful method in knowing the cause-effect of nature.

it can only be used under practical and ethical restrictions.

half of the brain cells of birds grow when they are in an enclosed area, but brain cells of birds in natural environment totally grow.

monitoring a behavior of a phenomenon over a long period of time

it is more descriptive than experiments done in laboratories

cause- effect cannot be proven unless through experimenting the results of naturalistic observation research in lab.

naturalistic observation research shows the mediterranean sea level is increasing that it covers more land every certain period of time

collecting data about a behavior through interviews and questionnaires

it helps in collecting data of a behavior of a large groups

it has to be clear for surveyors in order to be accurate

the world survey on whether Iran stops there nuclear program or not

using statistics to monitor the behavior of a object

it is an alternative of experimental research for finding the relation between two behaviors

it is a systematic way to show relation between two behaviors, but it doesn’t show the cause-effect

statistics show that obesity is a major problem for many Americans because they east a big amount of food more than people in other communities

collecting data about a behavior through observers

helps to get deep details about an individual or a phenomenon

it can be only described not explained through experimentalism

because of pollution in the Mediterranean sea many marine creatures migrated and left the sea.