Research Methods part 2
him is about what
Aims an a
general statement
a rea or topic is
being researched
La concise statement thatdirects the
ambition of the
study
Hypothesis
The experimental hypothesis is a prediction of the
likely outcome of an
investigation based on a
prior theory , study , research
hypothesis type of
>
- an experimental is a
alternative
hypothesis clear statement
:
a
Predicting the results of an experiment
that
Null
hypothesis
:
a default prediction
States there is too small of a
difference or
insignificant relationship
between two variables to be due to
anything but chance
Directional hypothesis /one tailed) -
a prediction
made when evidence
there is
strong
to particular outcome
suggest a
cats will puir longer
-
y
when they are
given tinned
food compared to when
they are given dry food
Non directional
hypothesis (two tailed) a prediction
-
made when we are not certain of the
Outcome of an experiment because of
Conflicting theories or lack of evidence
e
.
g There will be a significant difference between to
length of time a cat purrs when given tinned food
compared to purr lergen when food
, for experiments , retest
reliability is important the extent to which replicas
>
&
-
reproduce consistent results
Reliability and validity
Reliability refers to the
consistency of findings in
-
research which is an important criteria
for being scientific
In order to achieve
reliability ,
the research must be
replicable
>
-
controls extraneous variable
Eight of
Lif extraneous variables are not controlled , they
become confounding variables that skew results)
validity-refers to the extent to which the
study
measures what it intended to measure
I ↳
Internal
validity External
validity
how well the research how well
findings can be
establishes the cause generalized beyond
and effect relationship
the
study itself to real
between the
manipulated life Situations
I and the measured DV
↳
↳ can be ensured by making
ensured by a sample representative
standardized
procedure , limited
and
making a context in
is conducted
extraneous variablesS which the
study
realistic
reduced demand char .
- -
construct validity ecological validity
now well the measure of the extent to which research
behavior beingused is can be generalized to
useful indicator of situations
a
everyday
What is supposed to be
Studied
validity
< >
predictive population validity
the extent to which the extent to which the
performance currently Findings can be applied
to than
can predict future other populations
similar those in the sample
on
performance
criteria
him is about what
Aims an a
general statement
a rea or topic is
being researched
La concise statement thatdirects the
ambition of the
study
Hypothesis
The experimental hypothesis is a prediction of the
likely outcome of an
investigation based on a
prior theory , study , research
hypothesis type of
>
- an experimental is a
alternative
hypothesis clear statement
:
a
Predicting the results of an experiment
that
Null
hypothesis
:
a default prediction
States there is too small of a
difference or
insignificant relationship
between two variables to be due to
anything but chance
Directional hypothesis /one tailed) -
a prediction
made when evidence
there is
strong
to particular outcome
suggest a
cats will puir longer
-
y
when they are
given tinned
food compared to when
they are given dry food
Non directional
hypothesis (two tailed) a prediction
-
made when we are not certain of the
Outcome of an experiment because of
Conflicting theories or lack of evidence
e
.
g There will be a significant difference between to
length of time a cat purrs when given tinned food
compared to purr lergen when food
, for experiments , retest
reliability is important the extent to which replicas
>
&
-
reproduce consistent results
Reliability and validity
Reliability refers to the
consistency of findings in
-
research which is an important criteria
for being scientific
In order to achieve
reliability ,
the research must be
replicable
>
-
controls extraneous variable
Eight of
Lif extraneous variables are not controlled , they
become confounding variables that skew results)
validity-refers to the extent to which the
study
measures what it intended to measure
I ↳
Internal
validity External
validity
how well the research how well
findings can be
establishes the cause generalized beyond
and effect relationship
the
study itself to real
between the
manipulated life Situations
I and the measured DV
↳
↳ can be ensured by making
ensured by a sample representative
standardized
procedure , limited
and
making a context in
is conducted
extraneous variablesS which the
study
realistic
reduced demand char .
- -
construct validity ecological validity
now well the measure of the extent to which research
behavior beingused is can be generalized to
useful indicator of situations
a
everyday
What is supposed to be
Studied
validity
< >
predictive population validity
the extent to which the extent to which the
performance currently Findings can be applied
to than
can predict future other populations
similar those in the sample
on
performance
criteria
