A research design in which the same individuals or events are studied over several points in time This design allows researchers to observe changes over time
relaxation time (T1): the time it takes after a pulse in NMR for the nuclei to get the same spin up/spin down ratio they had before the pulse Also called spin-lattice relaxation
or Compressional or Axial Vibration is in the same direction as the transfer of energy Transverse Vibration is perpendicular to that direction
over an extended time; "a longitudinal study of twins" running lengthwise; "a thin longitudinal strip"; "longitudinal measurements of the hull" of or relating to lines of longitude; "longitudinal reckoning by the navigator
A longitudinal line or structure goes from one end of an object to the other rather than across it from side to side
A longitudinal study is a correlational research study that involves repeated observations of the same items over long periods of time, often many decades. Longitudinal studies are often used in psychology to study developmental trends across the life span. The reason for this is that unlike cross-sectional studies, longitudinal studies track the same people, and therefore the differences observed in those people are less likely to be the result of cultural differences across generations. Longitudinal studies are also used in medicine to uncover predictors of certain diseases
(Psikoloji, Ruhbilim) A longitudinal study is a correlational research study that involves repeated observations of the same items over long periods of time, often many decades. Longitudinal studies are often used in psychology to study developmental trends across the life span. The reason for this is that unlike cross-sectional studies, longitudinal studies track the same people, and therefore the differences observed in those people are less likely to be the result of cultural differences across generations. Longitudinal studies are also used in medicine to uncover predictors of certain diseases