Studies have indicated that there may be a link between blood glucose levels (our body's energy) and thinking. For example, making difficult choices uses up cognitive resources (or brain power) and these resources can be restored by increasing blood glucose.
Psychological scientists X.T. Wang and Robert D. Dvorak from the University of South Dakota investigated how blood glucose levels impact the way we think about present and future rewards. Volunteers answered a series of questions asking if they would prefer to receive a certain amount of money tomorrow or a larger amount of money at a later date. They responded to seven of these questions before and after drinking either a regular soda (containing sugar) or a diet soda (containing the artificial sweetener aspartame). Blood glucose levels were measured at the start of the experiment and after the volunteers drank the soda.
The results, reported in Psychological Science, a journal of the Association for Psychological Science, reveal that people's preferences for current versus later rewards may be influenced by blood glucose levels. The volunteers who drank the regular sodas (and therefore had higher blood glucose levels) were more likely to select receiving more money at a later date while the volunteers who drank the diet sodas (and who had lower blood glucose levels) were likelier to opt for receiving smaller sums of money immediately. These findings are suggestive of an adaptive mechanism linking decision making to metabolic cues, such as blood sugar levels.
The results indicate that when we have more energy available (that is, higher levels of blood glucose), we tend to be more future-oriented. The authors note that "the future is more abstract than the present and thus may require more energy to process. Blood glucose as brain fuel would strengthen effortful cognitive processing for future events." Conversely, having low energy (or low blood glucose levels) may make an individual focus more on the present. The finding that a diet soda drink increased the degree of future discounting suggests that artificial sweeteners may alarm the body of imminent caloric crisis, leading to increased impulsivity.
The authors conclude that if controlling blood glucose levels may affect our decisions for later versus current rewards, then "reducing the degree of fluctuation in blood glucose may offer a possible means for the treatment and intervention of some impulsive disorders, anorexia, drug addiction, and gambling addiction."
For more information about this study, please contact: X.T. Wang (firstname.lastname@example.org)
Psychological Science is ranked among the top 10 general psychology journals for impact by the Institute for Scientific Information. For a copy of the article "Sweet Future: Fluctuating Blood Glucose Levels Affect Future Discounting" and access to other Psychological Science research findings, please contact Barbara Isanski at 202-293-9300 or email@example.com
Rutgers-led innovation could spur faster, cheaper, nano-based manufacturing
14.02.2018 | Rutgers University
New study from the University of Halle: How climate change alters plant growth
12.01.2018 | Martin-Luther-Universität Halle-Wittenberg
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...
Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.
But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...
Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.
The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...
Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters
Quantum computer parts are sensitive and need to be cooled to very low temperatures. Their tiny size makes them particularly susceptible to a temperature...
15.02.2018 | Event News
13.02.2018 | Event News
12.02.2018 | Event News
21.02.2018 | Life Sciences
21.02.2018 | Life Sciences
21.02.2018 | Materials Sciences