NewsMakers
Communication prevents inaction by leveraging goodwill
Communication helps groups of strangers to focus on resolving common problems, and provides new and surprising insights into what goes on when negotiation talks fail or succeed.
A large-scale, multi-institutional study designed to examine human behavior has shown that communication helps groups of strangers to focus on resolving common problems, and provides new and surprising insights into what goes on when negotiation talks fail or succeed. The findings have implications for how to confront global, collective-action issues such as climate change mitigation.
Challenging global issues are frequently accompanied by shared associated risks, and without a concerted effort, resolution is hard to achieve. Climate change talks often stall when nations start accusing one another of contributing too little. When such a stalemate arises, it becomes unclear how to move forward or how to make involved parties adhere to agreed-upon terms.
Waiting for others to resolve common problems is recognized in behavioral studies as a form of free riding, which can ultimately hinder the group’s chances of achieving a given goal. To examine what causes free riding, and how to stave it off, a team of international researchers coordinated by Marko Jusup from Tokyo Institute of Technology (Tokyo Tech) in Japan and Zhen Wang from Northwestern Polytechnical University in China conducted a so-called social-dilemma experiment through which the team could investigate whether communication might help improve cooperativeness among strangers tasked with avoiding a shared risk.
The team organized a game experiment played by groups of three, seven, or 11 individuals. A total of 351 students from southern China, 126 students from northern China, and 112 students from 33 different nations participated in the game.
In each round of the game, players had to decide whether to invest their capital toward mitigating the shared risk, or to forgo investing and take more of the capital home, provided that the risk had not materialized. Thus, the dilemma was whether to invest one’s own capital or wait for others to act.
Investment options consisted of zero, two, or four units of capital — if everybody invested two units in every round of the game, the risk would be mitigated with certainty. Groups of, for example, seven individuals playing ten rounds of the game had to reach a target of 140 units to mitigate the risk. The initial capital consisted of 40 units per player. To make informed decisions, players could see their group’s current-round investment, as well as the remaining amount towards the target. Failure to reach the target entailed losing any capital saved during the game, and going home empty-handed, with 50% probability.
Approximately half of the players engaged in games in which no communication was possible. These players relied on their own devices to decide whether to invest or not. The other half played the same games, but with limited communication. This communication took place between game rounds, in the form of five yes/no questions designed to gauge sentiment and outlook harbored by player groups.
Across all group sizes, the study found that communication increased the likelihood of reaching the target by almost two-fold. The results thus confirmed a natural expectation that communication promotes cooperativeness, but the story does not end with a more cooperative environment created simply by persuading free riders to invest.
Intriguingly, the researchers found that players who communicate are more persistent in pursuing the investment target and refuse to give up even in the face of substantial current deficits. Genuine free riders appear to pay little attention to communication. It is players who already possess prosocial tendencies that, when communicating, better endure setbacks, and thus fight off inaction as the failure looms.
“Without communication, prosocial players shut down upon seeing nothing but a widening deficit. With communication, however, these same players stay hopeful thanks to cooperation-reinforcing signals from others,” write the researchers in their study published in the journal Proceedings of the National Academy of Sciences.
The study identified two prosocial behavioral types, namely cooperators and altruists. While altruists contribute almost unconditionally, cooperators are rather more astute, weighing carefully when and how much to contribute. Too much caution, however, often leads to near-misses of the investment target, meaning that even if just a few individuals fail to give their best at crucial times, the whole effort may be in vain. This is reflected in the fact that larger groups of communicating players often come close to mitigating the risk, but ultimately fail by a narrow margin. The overall lower success of larger groups points to additional challenges in coordinating an increasing number of individuals and highlights the insidious nature of collective-risk social dilemmas.
What, then, can be done to curb free riding and improve the situation for complex issues such as climate change talks? “The key is to leverage pre-existing goodwill, especially when an otherwise contributing side starts to doubt success,” says Jusup. “Persuading those who a priori have no intention to contribute is unlikely to amount to much,” adds Wang. Both researchers conclude that although experimental games can help uncover the mechanisms underlying mitigation efforts, caution needs to be heeded in extrapolating the study’s findings beyond experimental conditions.
NewsMakers
Maintaining a healthy heart may require regular doses of positivity
The findings of this study further point to the importance of attending to mental and behavioral health for cardiovascular disease prevention and cardiovascular health optimization.
Positive psychology interventions such as mindfulness, gratitude journaling and optimism training can consistently improve blood pressure, inflammation markers and other cardiovascular disease risk factors within a matter of weeks, a recent study found. However, since these benefits are associated with lifestyle changes such as eating healthier and greater physical activity, the researchers suggested that ongoing reinforcements may be needed to stay on course long term.
Rosalba (Rose) Hernandez, a professor of social work at the University of Illinois Urbana-Champaign, led a team that analyzed the findings of 18 randomized controlled trials that used positive psychological and mindfulness interventions to enhance mental or physical health.
The programs that the team reviewed included individual methods — such as structured telephone sessions, journaling with brief check-ins and digital platforms such as apps and text messaging — and interactive in-person group sessions, as well as hybrid formats that blended these with online tools and virtual meetings. Most of the programs consisted of weekly sessions and at-home activities that reinforced the skills taught, with the majority of programs lasting from six to 12 weeks, the team found.
In general, the programs included 50-200 adults with elevated cardiovascular risk factors such as uncontrolled hypertension, heart failure or other conditions. Typically, the participants were in their late 50s to mid-60s, and women comprised 35-55% of the samples across those studies that reported their participants’ gender, according to the researchers.
“In hypertension and postacute coronary syndrome cohorts, mindfulness-based programs delivered over an eight-week period reduced systolic blood pressure and lowered inflammatory markers such as high-sensitivity C-reactive protein and fibrinogen,” said Hernandez, who is a Fellow of the American Heart Association. “A 12-week spirituality-based digital intervention achieved one of the largest reductions — reducing systolic blood pressure measured with a standard cuff by 7.6 points, and central systolic pressure — which is measured in the aorta as it leaves the heart — by 4.1 points.”
In prior research on positive psychology interventions, scientists seldom defined the dose that was needed to obtain the beneficial effects, Hernandez said. She and the team members sought to clarify the frequency and duration that was most likely to improve individuals’ cardiovascular health.
Programs that had more frequent contact with their participants yielded the most consistent physiological benefits, underscoring the opportunity to embed positive psychological strategies into long-term cardiovascular care, Hernandez said.
The team found that the strongest behavioral improvements were achieved by an eight-week program delivered over WhatsApp that combined weekly sessions with daily microtasks, motivating participants to engage in greater physical activity, eat a healthier diet and take their medication as prescribed. A program that included motivational interviewing succeeded in increasing cardiac patients’ levels of physical activity by 1,800 steps a day and their medication adherence, while the mindfulness programs improved participants’ activity levels and diets only, according to the study.
“The therapeutic dose that was most consistently linked with improvements in blood pressure, inflammation and endothelial function was daily practice reinforced by weekly sessions over eight to 12-week periods,” Hernandez said. “Therapeutic dosing typically involved high-frequency dosing over this time period to obtain short-term physiologic benefits, while ongoing less-intensive contact may be needed to sustain behavioral change.”
Published in the journal Cardiology Clinics, the study was co-written by University of South Florida social work professor Soonhyung Kwon; Alyssa M. Vela, a professor of surgery and of psychiatry and behavioral sciences at Northwestern University Feinberg School of Medicine; and Katharine S. Edwards, a professor of cardiovascular medicine and of psychiatry and behavioral medicine at Stanford Medicine.
“The findings of this study further point to the importance of attending to mental and behavioral health for cardiovascular disease prevention and cardiovascular health optimization,” Vela said. “This speaks to the need for routine screening and integration of cardiac behavioral medicine to allow for access to important interventions.”
The current study adds to a growing body of research linking psychological well-being — including traits such as optimism, positive affect and gratitude — with cardioprotective benefits.
NewsMakers
Heart disease risk may start in the womb, study finds
Young adults whose mothers had high blood pressure during pregnancy — either pregnancy-associated hypertension, pre-eclampsia or eclampsia — had more signs of early arterial injury, higher blood pressure, higher body mass index and higher blood sugar than peers.
A child’s future heart health may be partially shaped before they are born, reports a new Northwestern Medicine study that found pregnancy complications are linked to poorer cardiovascular health in offspring more than 20 years later.
The study found that young adults whose mothers had high blood pressure during pregnancy — either pregnancy-associated hypertension, pre-eclampsia or eclampsia — had more signs of early arterial injury, higher blood pressure, higher body mass index and higher blood sugar than peers.
The authors said the study adds to growing evidence that cardiovascular risk may be transmitted across generations through a combination of biological, environmental and behavioral factors.
“That means we must make sure people maintain good health from childhood into young adulthood, so that if or when someone becomes a parent, they pass on the best opportunity for good health to their children,” said study senior author Dr. Nilay Shah, assistant professor of medicine in the division of cardiology at Northwestern University Feinberg School of Medicine.
How the study was conducted
Shah and colleagues evaluated nearly 1,350 mother-child pairs from the Future of Families and Child Well-Being Study, which enrolled mothers and children at birth between 1998 and 2000 across 20 U.S. cities. The children were then followed into adulthood.
Using delivery hospitalization records, the Northwestern scientists first identified whether mothers experienced pregnancy complications, including high blood pressure during pregnancy, gestational diabetes (high blood sugar during pregnancy) or preterm birth (before 37 weeks of pregnancy).
The three pregnancy complications are on the rise, and affect almost one in four pregnancies in the U.S.
The research team then analyzed cardiovascular health of offspring at age 22, using blood pressure measurements, blood testing, body mass index assessments and carotid artery ultrasounds to look for signs of artery injury.
Finally, the scientists compared participants with and without exposure to each pregnancy complication and adjusted for factors like income, education, difference in birth weight and smoking during pregnancy.
Key findings
At around age 22, participants whose mothers had high blood pressure during pregnancy had:
- Higher body mass index (+2.8 BMI points)
- Higher diastolic blood pressure (+2.3 mm Hg)
- Higher blood sugar levels (+0.2% HbA1c)
- Thicker artery walls (~0.02 mm)
While the difference in artery wall thickness may seem small, the study authors said it corresponds to roughly three to five years of additional vascular aging. That means arteries looked older and less healthy than expected, which raises the risk of future heart disease.
Other pregnancy complications also showed some long-term effect:
- Exposure to gestational diabetes was linked to worse blood pressure and some evidence of artery thickening
- Being born preterm was associated with higher blood sugar levels
‘Most heart disease is preventable’
With pregnancy complications on the rise in the U.S., Shah said the study provides compelling evidence that improving health before and during pregnancy could help reduce heart disease risk in the next generation.
“There is evidence that both parents’ health at the time of conception and during pregnancy influences a child’s health,” he said. “So, promoting health from an early age, like exercising regularly, eating healthfully, never smoking and getting enough sleep, is not just meant for an individual, but doing so may help future generations be healthier, too.”
Shah also emphasizes that risk is not destiny.
“The good news is that most heart disease is preventable,” he said. “If you experienced high blood pressure or high blood sugar during pregnancy, or your child was born early, it does not absolutely mean that your child will have worse health as adults. But I would encourage you to pay attention now to your child’s health behaviors.
“What children learn in childhood sets the stage for their health across their lives. If you are wondering whether your children’s behaviors are healthy, or are considering making a change, please speak with your child’s pediatrician for advice and guidance.”
Other Northwestern co-authors include Emily Lam, Abigail Gauen, Dr. Sadiya Khan, Alexa Freedman and Norrina Allen.
NewsMakers
Viagra could hold key to halting Peyronie’s disease
Combining two widely prescribed drug classes could provide the first effective treatment for early-stage Peyronie’s disease.
Combining two widely prescribed drug classes could provide the first effective treatment for early-stage Peyronie’s disease, according to a study published in The Journal of Sexual Medicine.
Peyronie’s disease (PD) is caused by the development of fibrotic scar tissue within the penis, leading to pain, curvature, sexual dysfunction and, in many cases, significant psychological distress. It affects an estimated 10 per cent of men during their lifetime, but despite its prevalence, treatment options are limited, particularly in the early phase of the condition.
The study, carried out by Anglia Ruskin University (ARU) and University College London Hospital (UCLH), found that combining phosphodiesterase type 5 (PDE5) inhibitors such as sildenafil (Viagra) and tadalafil (Cialis) with selective oestrogen receptor modulators (SERMs), including tamoxifen, may slow or even stop disease progression when given early.
The clinical study, carried out by Professor David Ralph of UCLH, evaluated outcomes in 133 men diagnosed with acute Peyronie’s disease who were treated with the drug combination for three months. Their results were compared with a smaller group of patients receiving standard care, which included giving vitamin E or no treatment at all. Standard care did not include surgery.
The study found 43 per cent of patients on the combination experienced an improvement in penile curvature, almost three times higher than in the standard‑care group (15 per cent).
At the start of treatment, 65 per cent of patients in the combination group reported pain during erections. After three months, that figure had fallen to just 1.5 per cent. By comparison, pain prevalence in the standard‑care group fell from 50 per cent to 27 per cent.
The clinical findings build on earlier laboratory work led by Professor Selim Cellek at ARU’s Fibrosis Research Group. Over the course of several years, Professor Cellek’s team screened 1,953 FDA‑approved drugs to identify compounds capable of blocking the transformation of fibroblasts into myofibroblasts, the key cells responsible for fibrosis. PDE5 inhibitors and SERMs emerged as particularly effective, and when used together demonstrated an effect greater than either drug alone.
Currently, there are no approved oral therapies proven to prevent early disease progression, forcing patients in the acute phase to wait until the condition stabilises before they can be offered treatments including injections or surgery.
Professor Cellek said: “Positive findings from this pilot clinical study validate our drug‑screening approach in the lab. It shows how repurposing well‑known medicines can accelerate progress in areas of unmet clinical need.
“Because both PDE5 inhibitors and SERMs are already widely used in clinical practice and have established safety profiles, the approach could be readily adoptable if confirmed in larger studies.
“These results suggest that early intervention targeting fibrosis could change how we treat Peyronie’s disease. Repurposing existing drugs may allow us to move from managing symptoms to modifying the disease itself.”
Professor David Ralph, Professor of Urology at UCLH, said: “This paper confirms the basic science research with regards to halting the progression of Peyronie’s disease. In previous papers we have noted that tamoxifen and PDE5 inhibitors inhibit the transformation of fibroblasts into myofibroblasts and therefore contraction of the plaque.
“This has now been put into clinical practice where this paper shows that when tamoxifen and a PDE5 inhibitor are combined, there is statistically less progression of the disease and improvement in curvature compared to the control arm. This is where from bench to clinical practice prevails and hopefully now a prospective clinical trial can be initiated.”
-
NewsMakers2 weeks agoHealthier brains may be more resilient to early Alzheimer’s disease
-
NewsMakers4 weeks agoStudy: Egg consumption is associated with a lower risk of Alzheimer’s Disease
-
NewsMakers2 weeks agoGrape consumption linked to changes in gene expression and improved skin health
-
NewsMakers2 weeks agoIs ‘yo‑yo dieting’ really harmful? New analysis challenges long‑standing assumptions about weight cycling
-
NewsMakers2 weeks agoViagra could hold key to halting Peyronie’s disease
-
NewsMakers2 weeks agoHeart disease risk may start in the womb, study finds
-
Destinations2 weeks agoChecking the café vibe of Filipino-ish Yellow Bird resto
-
NewsMakers4 weeks agoStudy finds low-dose eye drops successful in managing adult myopia for 24 hours
