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Variability in information and spacing between learning, improves memory

“If you are trying to remember the new person’s name and something about them, like their favorite food, it is more helpful to repeat that same exact name-food pairing multiple times with spacing between each,” says a neuroscientist.

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Credit: Erik Mclean / Unsplash

New experiments by neuroscientists and psychologists at the University of Pittsburgh and Temple University, both in the US, suggest varying what we study and spacing out our learning over time can both be helpful for retaining memories. 

The paper was published in the Proceedings of the National Academy of Sciences. 

“Lots of prior research has shown that learning and memory benefit from spacing study sessions out,” said co-author Benjamin Rottman, a psychologist at the University of Pittsburgh, in a press release.

By ‘spacing effect’, psychologists refer to not cramming information overnight, and instead ‘space’ it across a longer period. However, one important assumption here is that the information learnt doesn’t change. That is, you’re trying to memorize a diagram from a textbook at different intervals.

However, the new research wants to test the spacing effect with some of the information changed with time. The press release used an example of recalling features in a cafe across two different sittings, when the barista wasn’t the same.

The research question was: how adept is the brain then, at making associative connections and memory recall? 

The researchers conducted two experiments differentiated by the number of sittings through which they can absorb information. In both, participants were allowed to memorize two pairs of images – each pair consisting of an item and a scene.

One experiment will see participants sit through memorizing information in four sittings across a day, but repeated for 24 days with a test on the 25th day. However, in this case, one of the item-scene pairs will be repeated throughout the four sittings for 24 days. The other one, crucially however, will have some variation. Either the item remains the same, and the scene changes – or vice versa. 

The second experiment in contrast, will see all the memorization done in a single sitting, and tested the next day. 

The test is smartphone based – to test for their ‘associative’ learning, i.e. can they remember which scene a certain item corresponds to? Also, they test for a simple ‘item memory’, i.e. do they ever recall seeing the item before? 

The results did imply yet again that spaced learning was better than cramming. However, the most interesting result was how participants were better at recalling item-scene pairs with variations than they did for an item-scene pair that was flashing repeatedly before them across the sittings. 

What’s the main takeaway?

“Spacing only benefited memory for the pairs that were repeated exactly, and only if there were pretty long gaps, hours to days, between study opportunities,” said Rottman. “For example, if you are trying to remember the new person’s name and something about them, like their favorite food, it is more helpful to repeat that same exact name-food pairing multiple times with spacing between each.”

And there is some practical application this understanding can provide. 

“In theory our findings should be broadly relevant to different sorts of tasks, like remembering someone’s name and things about them, studying for a test and learning new vocabulary in a foreign language,” said Rotterman. 

However, there’s a caveat for school kids. “Because of how nuanced memory is,” Rotterman said, “it is hard to provide clear advice for things like studying for a test because the sort of material can be so different.”

Lead author Emily Cowan, a cognitive neuroscientist at Temple University, said, “Our work suggests that both variability and spacing may present methods to improve our memory for isolated features and associative information, respectively, raising important applications for future research, education and our everyday lives.”

The research was funded by the US’ National Science Foundation (NSF) and the National Institute of Health (NIH).

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Learning & Teaching

Canine Cognitive Abilities: Memory, Intelligence, and Human Interaction

Research on canine cognition shows that dogs have impressive memory retention, which helps them recognize faces, remember commands, and understand their environment.

Ajith Madhavan

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Image: Lazyboness from Pixabay

Dogs are renowned for their ability to adapt and respond to various situations. One of the key features of their intelligence is their memory and how they utilize past experiences to navigate new circumstances. Dogs not only remember specific events but also use those memories to make decisions in future situations. Research on canine cognition shows that dogs have impressive memory retention, which helps them recognize faces, remember commands, and understand their environment. When faced with a new scenario, they often recall previous similar experiences and apply those learnings effectively.

Understanding Human Cues: A Result of Evolution

Dogs’ remarkable ability to understand human cues—whether through body language, vocal tones, or facial expressions—is another significant aspect of their cognitive prowess. Over thousands of years of domestication, dogs have learned to interpret human signals, making them highly attuned to the needs and intentions of their human companions. This phenomenon is often attributed to the domestication hypothesis, which suggests that dogs have evolved alongside humans and, in doing so, developed the ability to read and respond to human cues.

Image: Zigmars Berzins from Pixabay

However, some researchers argue that dogs’ ability to understand human cues might not solely stem from domestication. There is a possibility that dogs’ social intelligence could be a result of convergent evolution, where dogs’ cognitive abilities have evolved similarly to those of social animals like primates, despite not sharing a direct evolutionary path. This perspective is still debated in the field, but it underscores the complexity of understanding the roots of canine cognition.

Cognitive Categories in Dogs: Classifying Intelligence

Dogs’ cognitive abilities can be broken down into various categories that reflect the diversity of their intelligence. These categories help researchers study the different aspects of how dogs think, learn, and behave. Some of the key categories include:

• Spatial Intelligence: Dogs possess a strong sense of spatial awareness, allowing them to navigate their environment effectively. They can remember the locations of objects such as toys, food bowls, and leashes. This spatial awareness also extends to their ability to assess distances and understand their surroundings. While most dogs develop this intelligence naturally, some may need training to enhance their spatial skills.

• Intrapersonal Intelligence: This refers to a dog’s ability to understand its own physical abilities, limitations, and needs. For example, a dog might avoid attempting an action, such as jumping over a large gap, if it perceives it to be beyond its capabilities. This form of intelligence reflects the dog’s self-awareness, although the level of this awareness may differ from that seen in humans. Dogs might not have conscious self-reflection, but their behavior indicates an understanding of their limits.

• Interpersonal Intelligence: Dogs are highly social animals, and their interpersonal intelligence is reflected in their ability to communicate with both humans and other dogs. They can interpret social cues and respond accordingly, forming strong bonds with their human families and understanding the dynamics of their social group. This intelligence is particularly evident in their interactions with humans, where they not only respond to verbal commands but also tune into human emotions, following social hierarchies and giving appropriate responses. For example, dogs can respond to human emotions by offering comfort or adjusting their behavior based on the emotional state of their human companions.

The Role of Human-Dog Interaction in Cognitive Development

Dogs’ cognitive abilities, including their ability to understand human emotions, are likely a product of their long history of living alongside humans. Studies show that dogs can often read the intentions of humans, making them exceptionally skilled at interpreting social cues. This human-dog bond has shaped dogs’ social intelligence, allowing them to be highly responsive to the emotional and social cues provided by humans. For instance, when a human expresses frustration or joy, a dog can often sense the change in mood and react accordingly, whether by offering comfort or simply adjusting their behavior.

Interestingly, some studies suggest that domestic dogs might lose some of their problem-solving abilities when raised solely in human environments. This loss might occur because dogs begin to rely on human intervention for problem-solving, rather than using their independent cognitive skills. However, with appropriate training and stimulation, many dogs can retain or even develop complex problem-solving abilities.

Variations and Training

Just as with humans, not all dogs display the same level of cognitive abilities. Some dogs might struggle with spatial awareness or might not respond to certain social cues as effectively as others. This is particularly evident in some breeds or individual dogs that may require additional training to enhance these skills. Spatial awareness, for example, might be challenging for dogs that were not raised in environments where they had to navigate complex spaces. Training exercises can help improve these cognitive areas, allowing the dog to become more aware of its surroundings and capable of responding appropriately.

The Kombai or Polygar is a breed of working dog native to Tamil Nadu in Southern India. Credit: Ajith Madhavan

Moreover, self-awareness or intrapersonal intelligence can also vary among dogs. While some dogs might instinctively understand their physical limitations (e.g., recognizing when they can’t jump a certain height), others may require repeated experiences to learn these boundaries.

Complex and Multifaceted

Overall, dogs exhibit a wide range of cognitive abilities that demonstrate both adaptive intelligence and social prowess. Their ability to learn, remember, and apply past experiences to new situations showcases their problem-solving skills, while their social intelligence allows them to communicate effectively with humans and other dogs. While there is still much to learn about the origins and evolution of canine intelligence, it is clear that dogs have evolved to become highly adept at interpreting the world around them, both physically and socially.

Image: Anja from Pixabay

The domestication of dogs, along with their interaction with humans, has contributed significantly to the development of their cognitive abilities. These abilities are not only a result of their domesticated lives but also a product of their evolutionary adaptation to social living, both with humans and other animals. Understanding these cognitive abilities in dogs helps deepen the bond between dogs and humans and enriches our appreciation for these remarkable companions.

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Learning & Teaching

Teach empathy at schools, study suggests

Empathy Lessons Boost Student Behaviour and Emotional Awareness, Study Finds

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A recent study has highlighted the transformative impact of empathy education on student behaviour and emotional awareness. The research, involving 900 students across six countries, found that a short-term empathy programme led to significant positive changes in students’ conduct, emotional literacy, and cultural curiosity.

The study evaluated the “Empathy Programme,” a term-long course developed by Empathy Studios, a UK-based organization specializing in empathy education. The programme, which utilizes video-led lessons and interactive activities, was assessed with the support of academics from the Faculty of Education at the University of Cambridge.

Empathy Studios, founded by former science teacher Ed Kirwan, aims to foster empathy in students aged five to 18 through thought-provoking films and discussions. Their annual “Empathy Week,” which offers films, resources, and events free of charge, has reached 1.3 million students globally.

Survey data from 10 participating schools revealed that students’ empathy scores increased from an average of 5.55 to 7, while behaviour scores improved from 6.52 to 7.89 over a 10-week period. Teachers reported that the programme had a notable impact on classroom dynamics, with one primary school teacher noting a reduction in the need for parental interventions.

Feedback from students also reflected positive outcomes, with one student commenting, “I think that everyone in the class has become kinder.”

Ed Kirwan, founder of Empathy Studios, emphasized the programme’s success in teaching students to appreciate and celebrate differences. “The programme’s success lies in teaching students to celebrate difference, which changes their wellbeing and behavior,” Kirwan said. “There’s never an excuse for poor behavior, but often a reason, which greater mutual understanding can potentially address.”

Dr. Helen Demetriou, a specialist in empathy education at the University of Cambridge who supported the evaluation, highlighted the programme’s effectiveness. “The findings show that a fairly simple, film-based programme can raise pupils’ empathy levels, enhancing their understanding of themselves, others, and global issues,” she stated. “That supports a more complete learning experience, developing social and emotional skills that we know contribute to improved behavior and more engaged learning.”

The study’s results come at a time of increasing societal division, with Kirwan calling for greater empathy education as a foundation for social cohesion. “If the new government is serious about curriculum reforms that prepare young people for life and work, we must ensure that schools equip them to understand, be curious about, and listen to each other, even in moments of disagreement,” he urged.

The Empathy Programme’s findings underscore the importance of incorporating empathy education into school curricula to foster a more understanding and connected generation.

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India’s Premier Universities Ranked: Indian Institute of Science tops the list

The Indian Institute of Science, located in Karnataka’s capital, Bengaluru, has been ranked number one for its unparalleled contributions to science and technology

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In a significant acknowledgment of academic excellence, the latest ranking from the government agency has unveiled India’s top ten universities, underscoring the country’s rich tradition of higher education. Leading the list is the Indian Institute of Science (IISc) in Bengaluru, which continues to set the benchmark for research and innovation since its establishment in 1909.  The universities are listed by the National Institutional Ranking Framework (NIRF), which outlines a methodology to rank institutions across the country.

The Indian Institute of Science, located in Karnataka’s capital, Bengaluru, has been ranked number one for its unparalleled contributions to science and technology. Known for its cutting-edge research and world-class faculty, IISc’s rigorous academic environment fosters innovation and discovery, making it a premier choice for students and researchers alike.

Following closely is Jawaharlal Nehru University (JNU) in New Delhi, which has secured the second spot. Established in 1969, JNU is renowned for its strong emphasis on social sciences, humanities, and its vibrant intellectual culture. The university has consistently been at the forefront of academic and research achievements, contributing significantly to policy discussions and social discourse.

The third position is held by Jamia Millia Islamia, also in Delhi. Founded in 1920, this institution has grown into a leading center for research and education across various disciplines, including engineering, humanities, and social sciences. Jamia Millia Islamia’s commitment to inclusivity and academic excellence has solidified its reputation as a top-tier university.

Manipal Academy of Higher Education, established in 1993 and located in Manipal, Karnataka, is ranked fourth. This institution has gained recognition for its diverse academic programs and global outlook, attracting students from across the globe. Its emphasis on holistic education and research excellence has earned it a prominent place in the rankings.

Banaras Hindu University (BHU), founded in 1916 and situated in Varanasi, Uttar Pradesh, occupies the fifth position. With its long history and strong emphasis on traditional and modern disciplines, BHU continues to be a beacon of academic and cultural heritage.

The University of Delhi, another top performer, is ranked sixth. Established in 1922, this institution is celebrated for its comprehensive range of programs and vibrant campus life. It has been a significant player in shaping India’s educational landscape.

Amrita Vishwa Vidyapeetham, founded in 2003 and located in Coimbatore, Tamil Nadu, is ranked seventh. The university’s commitment to interdisciplinary research and innovation has contributed to its impressive standing in the rankings.

Aligarh Muslim University (AMU), which was established in 1920 in Aligarh, Uttar Pradesh, holds the eighth spot. AMU’s focus on providing quality education across various fields has cemented its position as a leading institution.

Jadavpur University in Kolkata, West Bengal, is ranked ninth. Since its inception in 1955, Jadavpur University has been recognized for its diverse academic programs and research initiatives.

Rounding out the top ten is Vellore Institute of Technology (VIT), founded in 1984 in Vellore, Tamil Nadu. VIT’s emphasis on engineering and technology has propelled it into the top ranks, reflecting its growing influence and global reach.

These rankings highlight the diverse strengths and contributions of India’s leading universities, showcasing their pivotal role in advancing education and research in the country.

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