News tagged with longitudinal study
Teen smokers who rationalize their use of cigarettes by saying, "At least, I'm not doing drugs," may not always be able to use that line.
Health May 05, 2013 | 2 / 5 (1) | 0
(Medical Xpress)—Want a good night's sleep? Be positive – consistently. Although happiness is generally good for sleeping, when a person's happiness varies a lot in reaction to daily ups and downs, sleep suffers, reports ...
Health Apr 29, 2013 | 5 / 5 (4) | 0 |
Older adults who are subject to elder abuse, neglect and exploitation face a greater risk of being hospitalized than other seniors, according to the results of a study published in the April 8 issue of JAMA Internal Medicine.
Health Apr 08, 2013 | not rated yet | 0
(Medical Xpress)—Children who have an earlier onset of puberty have poorer mental health from as early as preschool age, a new study by Murdoch Childrens Research Institute has found.
Psychology & Psychiatry Apr 02, 2013 | 5 / 5 (2) | 0 |
On average, children take the first steps on their own at the age of 12 months. Many parents perceive this event as a decisive turning point. However, the timing is really of no consequence. Children who start walking early ...
Pediatrics Mar 28, 2013 | 5 / 5 (1) | 0
Teenagers' struggles to connect with their peers in the early adolescent years while not getting swept along by negative peer influences predict their capacity to form strong friendships and avoid serious problems even ten ...
Psychology & Psychiatry Mar 28, 2013 | 5 / 5 (1) | 0
(HealthDay)—For vitamin D deficient individuals, cholecalciferol therapy is associated with reduced phosphocreatine recovery half-time in skeletal muscle and with improvements in fatigue, according to a ...
Health Mar 19, 2013 | not rated yet | 0
Students who date in middle school have significantly worse study skills, are four times more likely to drop out of school and report twice as much alcohol, tobacco and marijuana use than their single classmates, ...
Health Mar 15, 2013 | 3 / 5 (4) | 1
A new mother may constantly worry and check to see if her baby is still breathing. Or she may fret about germs, obsessing whether she's properly sterilized the bottles, then wash and rewash them.
Psychology & Psychiatry Mar 04, 2013 | 5 / 5 (2) | 0
Bullied children grow into adults who are at increased risk of developing anxiety disorders, depression and suicidal thoughts, according to a study led by researchers at Duke Medicine.
Psychology & Psychiatry Feb 20, 2013 | 5 / 5 (1) | 0 |
Toddlers whose parents praised their efforts more than they praised them as individuals had a more positive approach to challenges five years later. That's the finding of a new longitudinal study that also found gender differences ...
Pediatrics Feb 12, 2013 | not rated yet | 0
A regular walking routine significantly reduces the risk of Metabolic Syndrome, a condition which affects one in four people in the UK and can cause heart disease, strokes and cancer.
Health Feb 06, 2013 | 5 / 5 (1) | 0
New research at the University of Chicago and the University of North Carolina at Chapel Hill shows that children begin to show signs of higher-level thinking skills as young as age 4 ½. Researchers have previously attributed ...
Psychology & Psychiatry Jan 23, 2013 | 5 / 5 (1) | 0 |
Emotional exhaustion and physical and cognitive fatigue are signs of burnout, often caused by prolonged exposure to stress. Burnout can cause negative health effects including poor sleep, depression, anxiety, ...
Health Jan 17, 2013 | 5 / 5 (1) | 0
(Medical Xpress)—Children could be better off playing video games this holiday season than watching television, a QUT study shows.
Psychology & Psychiatry Jan 16, 2013 | 3 / 5 (2) | 0
A longitudinal study is a correlational research study that involves repeated observations of the same items over long periods of time — often many decades. It is a type of observational study. Longitudinal studies are often used in psychology to study developmental trends across the life span, and in sociology to study life events throughout lifetimes or generations. 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. Because of this benefit, longitudinal studies make observing changes more accurate and they are applied in various other fields. In medicine, the design is used to uncover predictors of certain diseases. In advertising, the Communicus System, the design is used to identify the changes that advertising has produced in the attitudes and behaviors of those within the target audience who have seen the advertising campaign.
Because longitudinal studies are observational, in the sense that they observe the state of the world without manipulating it, it has been argued that they may have less power to detect causal relationships than do experiments. But because of the repeated observation at the individual level, they have more power than cross-sectional observational studies, by virtue of being able to exclude time-invariant unobserved individual differences, and by virtue of observing the temporal order of events.
Longitudinal studies allow social scientists to distinguish short from long-term phenomena, such as poverty. If the poverty rate is 10% at a point in time, this may mean that 10% of the population are always poor, or that the whole population experiences poverty for 10% of the time. It is not possible to conclude which of these possibilities is the case using one-off cross-sectional studies.
Types of longitudinal studies include cohort studies and panel studies. Cohort studies sample a cohort, defined as a group experiencing some event (typically birth) in a selected time period, and studying them at intervals through time. Panel studies sample a cross-section, and survey it at (usually regular) intervals.
A retrospective study is a longitudinal study that looks back in time. For instance a researcher may look up the medical records of previous years to look for a trend.
For more information about Longitudinal study, read the full article at
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