Cara is running a study to examine the effect of music on mood. She randomly assigns participants to three conditions: rock, jaz
z, and country. She has the participants rate their mood with a short questionnaire, then listen to their assigned music for 20 minutes, and then fill out the mood questionnaire again. Which kind of design is she using?
In this design, she has her participants assess their mood in their pretest context. This means, participants rate their mood before listening to the music genres that Cara has assigned for each one of them.
After that, participants undergo the test by listening to their selected genre, and finally, they rate their mood after that. This is the postest stage of the design, and the answers of this moment will allow Cara to draw comparisons with the pretest results. This comparison is the information that will either confirm Cara's hypothesis or reject it.
Mary's doctor would probably say to her that she has nothing to worry about. What her baby is experiencing is REM or Rapid Eye Movement. This is a stage of sleeping where a person has a low muscle tone throughout the body and a frantic movement of the eyes beneath the eyelids. In this stage is where we experience dreams more vividly and if we wake up we feel refreshed and alert. mary has nothing to worry about, babies tend to dream vividly even at such an early stage in our lives.
The absence of a flight data recorder led the investigators to call off the investigation. It is often concluded that the investigation was called off because:- the information at disposal was incomplete. The flight data recorder is a crucial instrument that receives information from the sensors located in several parts of the plane and provides essential information associated with aircraft accidents.
