ch 1part 3 reviews Flashcards
Scientific Method Step 5:
Draw conclusions, make revisions
If the result is not what you expected, that does make it a “wrong answer.”
false , does not and you need :
revise your hypothesis
conduct additional experiments
Look for patterns and relationships in evidence.
. Determine if findings conclusion support hypothesis
step ?
5 : make revision and draw conclusion
Elements of Well-designed Experiments :
Treatment
Experimental group
Control group
Variables
an experimental condition applied to patients
treatment
a group of research participants that receive treatment
Experimental group
control group
A group of individuals who are treated identically to the experimental group with one exception -they are not exposed to treatment
Characteristic of an experimental system that are subject to change
Variables
Independent variable versus dependent variable :
Independent variable:
the variable that is changed by the researcher
Dependent variable:
the variable that change as result of change in the independent variable
Why do we control variables?
What happens when an experiment doesn’t contain controls?
Attempt to minimize any differences between a control group and an experimental group other than the treatment itself
cause :
difference between the groups at the end of the experiment are more likely the result of the treatment
the placebo effect
highlights the need for comparison of treatment effects with an appropriate control group.
such as : try treament on mental health people to see what relieve them
this is the phenomenon in which people respond favorably to any treatment that medical researcher asked them for to see the evect :
placebo
