The risk of marijuana use among deviance-prone boys is a reflection of the social acceptance of drug use among adolescents. The risk among deviance prone girls, however, does not change with shifts in the popularity of drug use. Deviance prone girls are just as likely to use marijuana during years of high and low national use.
The study, based on data collected from 44,751 students from the 12th grade from 1979 to 2004, also showed that deviance proneness is not only related to regular, more problematic use of marijuana, but is also related to occasional use of the drug.
Michelle Little, Ph.D., of the Prevention Research Center at Arizona State University in Tempe, who is the lead author of the study, said the findings are important for prevention programs.
“Parents and teachers need to be aware that historically, even those teens that use marijuana occasionally have been more likely to show antisocial or risky behavior. Also it appears that adolescents’ social rejection of marijuana use has been a powerful drug-use deterrent. Therefore, to prevent drug use, we need to drive down social acceptance of marijuana use among all adolescents through a variety of media campaigns and risk-focused prevention programs. We should also combine that with drug use prevention programs targeted for deviance prone male and female teens,” Little said.
The study measured “deviance proneness” based on a variety of factors, including criminal behavior, such as shop lifting or property damage; truancy; low pro-social commitments to school and religion; and thrill seeking. Regular marijuana use was defined as weekly marijuana use; occasional use was defined as up to three times per month. Regular and occasional use cutoffs are based on current understanding of drug usage levels that are related to social, personal and family problems among teens.
While previous studies have shown the relationship between a deviance-prone profile and frequency of drug use, “this is the first study to establish this relationship across 26 years of national historical data for both male and female youth,” according to Little.
The findings of her study are restricted to Caucasian or European-American youth. They do not extend to African-American or Latino students because those groups were not represented in the sample in sufficient numbers for statistical reliability.
Adolescent marijuana use declined significantly between 1979 and 1992 and then went up again by 1997-1999. Adolescent social approval of marijuana was at a contemporary low in 1992.
“During times of low population use of marijuana, male youth who are deviance prone are more likely to limit their use of marijuana than during historical peaks in adolescent marijuana use. This suggests that deviance-prone male youth respond to the social acceptance of marijuana use. By contrast, the data shows that deviance-prone girls do not necessarily respond in similar fashion. Deviance-prone female teens show similar risk for marijuana use during years of high and low national use,” according to Little.
During the 26 years of the study, on average, 61.1% of high school seniors did not use marijuana, 29.9% used it occasionally or up to 3 times a month, and 9% were regular users.
Prabhu Ponkshe | EurekAlert!
The personality factor: How to foster the sharing of research data
06.09.2017 | ZBW – Leibniz-Informationszentrum Wirtschaft
Europe’s Demographic Future. Where the Regions Are Heading after a Decade of Crises
10.08.2017 | Berlin-Institut für Bevölkerung und Entwicklung
Controlling electronic current is essential to modern electronics, as data and signals are transferred by streams of electrons which are controlled at high speed. Demands on transmission speeds are also increasing as technology develops. Scientists from the Chair of Laser Physics and the Chair of Applied Physics at Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) have succeeded in switching on a current with a desired direction in graphene using a single laser pulse within a femtosecond ¬¬ – a femtosecond corresponds to the millionth part of a billionth of a second. This is more than a thousand times faster compared to the most efficient transistors today.
Graphene is up to the job
At the productronica trade fair in Munich this November, the Fraunhofer Institute for Laser Technology ILT will be presenting Laser-Based Tape-Automated Bonding, LaserTAB for short. The experts from Aachen will be demonstrating how new battery cells and power electronics can be micro-welded more efficiently and precisely than ever before thanks to new optics and robot support.
Fraunhofer ILT from Aachen relies on a clever combination of robotics and a laser scanner with new optics as well as process monitoring, which it has developed...
Plants and algae use the enzyme Rubisco to fix carbon dioxide, removing it from the atmosphere and converting it into biomass. Algae have figured out a way to increase the efficiency of carbon fixation. They gather most of their Rubisco into a ball-shaped microcompartment called the pyrenoid, which they flood with a high local concentration of carbon dioxide. A team of scientists at Princeton University, the Carnegie Institution for Science, Stanford University and the Max Plank Institute of Biochemistry have unravelled the mysteries of how the pyrenoid is assembled. These insights can help to engineer crops that remove more carbon dioxide from the atmosphere while producing more food.
A warming planet
Our brains house extremely complex neuronal circuits, whose detailed structures are still largely unknown. This is especially true for the so-called cerebral cortex of mammals, where among other things vision, thoughts or spatial orientation are being computed. Here the rules by which nerve cells are connected to each other are only partly understood. A team of scientists around Moritz Helmstaedter at the Frankfiurt Max Planck Institute for Brain Research and Helene Schmidt (Humboldt University in Berlin) have now discovered a surprisingly precise nerve cell connectivity pattern in the part of the cerebral cortex that is responsible for orienting the individual animal or human in space.
The researchers report online in Nature (Schmidt et al., 2017. Axonal synapse sorting in medial entorhinal cortex, DOI: 10.1038/nature24005) that synapses in...
Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a...
19.09.2017 | Event News
12.09.2017 | Event News
06.09.2017 | Event News
26.09.2017 | Life Sciences
26.09.2017 | Physics and Astronomy
26.09.2017 | Information Technology