Dependant and Independant Variables

[psychlaw]

EDIT: A few questions on these

In the following examples what is the IV and what is the DV

(a) Receiving a reward for doing homework will increase the amount of time one spends studying

(b) People who are in love percieve each other more positively than other people percieve them

(c) Night vision is improved by carrots

(d) A baby who is cintinually picked up as soon as it cries will cry less in the future

(e) people who warn higher salaries have greater job satisfaction




I have done them all but just want to know if im correct / on the right track

[daniel99]

The independent variables are those that are deliberately manipulated to invoke a change in the dependent variables (by the experimenter).

The dependent variables are those that are observed to change in response to the independent variables.

[daniel99]

EDIT: A few questions on these

In the following examples what is the IV and what is the DV

(a) Receiving a reward for doing homework will increase the amount of time one spends studying

(b) People who are in love percieve each other more positively than other people percieve them

(c) Night vision is improved by carrots

(d) A baby who is cintinually picked up as soon as it cries will cry less in the future when along

(e) people who warn higher salaries have greater job satisfaction




I have done them all but just want to know if im correct / on the right track

Basically, the IV is two things e.g. receiving a reward or not receiving a reward and the Dv is the effect of the IV e.g. job satisfaction levels.

[psychlaw]

Are you sure? I'm pretty sure thats not right.......

Anyway I want the answers to every Q if anyone could do that

EG
 (a)
IV = ...
DV =

(b) IV =
DV =

and so on

[daniel99]

well, im pretty sure thats its right (my teacher seems to think aso anyway).

[daniel99]

il do one for you cbb doing them all.

SCENARIO;
people who earn higher salaries have greater job satisfaction

IV; whether people earn high salaries or not

DV; the level of job satisfaction

[Nick]

In the following examples what is the IV and what is the DV

(a) Receiving a reward for doing homework will increase the amount of time one spends studying
IV= whether the student receives a reward or not (reward Vs no reward)
DV= the amount of time spent studying (e.g. measured in hours over a weekly period)-always describe the specifics in relation to what is being measured

(b) People who are in love perceive each other more positively than other people perceive them
IV= whether two individuals are in a love-based relationship or are simply aquaintances (in love Vs aquaintances)
DV= the degree of positivity exhibited by the pair to one another (as measured by the number of compliments they give each other over the space of one day)

(c) Night vision is improved by carrots
IV= Whether participants are required to consume carrots or not (Carrots Vs Non carrots)
DV= the strength of an individual's night vision as measured by a specialised eye test conducted by an optometrist

(d) A baby who is continually picked up as soon as it cries will cry less in the future
IV= whether a baby is picked up continually each time he/she begins to cry or is comforted infrequently (picked up Vs picked up on random, infrequent occasions)
DV= the number of crying incidents that occur over a month long period

(e) people who warn higher salaries have greater job satisfaction[/b]
IV= level of salary, as measured in dollars (modest salary Vs high salary)
DV= level of job satisfaction as measured by a survey