Recent thoughts

Note:

At present, I write here infrequently. You can find my current, regular blogging over at The Deliberate Owl.

Summer plans

My first post-graduation plans have been finalized: I'll be returning to the fine world of software development and robotics for a summer internship at NASA Goddard Space Flight Center. I'll be working with a diverse bunch of engineers and interns on what I expect will be super exciting, super cool projects.

Thesis!

_red and blue simulated robots in a flat simulated world_

On Friday, I turned in my undergraduate cognitive science thesis. It's been a year in the making -- I started brainstorming ideas last April, spent all summer reading up on relevant literature, and all of this school year developing my model, programming the simulation, running experiments, and finally, writing about all of that.

It's a little weird to realize that I don't have to constantly be thinking about this project any more. I don't have to be, but ever since handing it in, my thoughts continue to swirl around what further analyses to do on the data I collected, how to fix up the studies I did to get more powerful results, which studies would make sense as the next step...

Here's the abstract:

A biologically inspired predator-prey study of the effects of emotion and communication on emergent group behavior

Any agent that functions successfully in a constantly changing world must be able to adapt its behavior to its current situation. In biological organisms, emotion is often highlighted as a crucial system for generating adaptive behavior. This paper presents a biologically-inspired predator-prey model to investigate the effectiveness of an emotion-like system in guiding the behavior of artificial agents, implemented in a set of simulated robots. The predator's behavior was governed by a simple subsumption hierarchy; the prey selected actions based on direct sensory perceptions dynamically integrated with information about past motivational/emotional states. Aspects of the prey's emotion system were evolved over time. The first study examined the interactions of a single prey with the predator, indicating that having an emotion system can led to more diverse behavioral patterns, but may not lead to optimal action selection strategies. In the second study, groups of prey agents were evolved. These agents began to utilize alarm signaling and displayed fear contagion, with more group members surviving than in groups of emotionless prey. These results point to the pivotal role emotion plays in social scenarios. The model adds to a critical body of research in which important aspects of biological emotion are incorporated into the action selection mechanisms of artificial agents to achieve more adaptive, context-dependent behavior.


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One identity?

I ran across the following quote from Mark Zuckerberg the other day -- not for the first time -- but this time my initial response, instead of being some disgruntled mumbling about Facebook's privacy settings, was how Western.

_shadow of a girl on the ground, tan bark below red plank walkway below green weeds_

"You have one identity. The days of you having a different image for your work friends or co-workers and for the other people you know are probably coming to an end pretty quickly... Having two identities for yourself is an example of a lack of integrity." --Mark Zuckerberg

Why Western?

Richard Nisbett on Geography, ecology, philosophy

Last semester, I read a book called The Geography of Thought: How Asians and Westerners Think Differently...and Why by Richard Nisbett. As you may infer from the book's title, Nisbett talks about all kinds of differences in Western versus East Asian cultures and why those differences exist -- and I mean all kinds. It's a broad book. I'm going to give you the flavor:

Nisbett starts by outlining differences in philosophy. Greek philosophy took as a fundamental principle that matter divides into discrete objects. The Greeks drew a line between the internal and external, essentially inventing nature. Perhaps this was a result of their culture of debate, which relies on the notion that two minds can have different representations of the world and that the world has its own nature independent from both minds. Western cultures grew out of Greek philosophy. Since boundaries between any object and its surroundings were built in, people were discrete. Westerners emphasize individualism. The focus on objects and individuals may have led to many of dualisms we have encountered this semester.

Ancient Chinese philosophy, on the other hand, bespoke a constantly changing world, full of contradictions and moving in endless cycles. Harmony and holism were emphasized: there was a mutual influence of everything on everything else. Chinese has no abstractness, either; no “whiteness” without a thing that is white – the white of a swam, the white of the snow. People defined themselves in relation to others, interdependent rather than independent; the goal was The Way rather than truth or knowledge.

_man sitting on one of a series of folding chairs that are half-buried in the grass_

Some of these differences may have arisen in part from the ecology in which the cultures developed. Greece was a maritime location where people of many customs and beliefs were encountered, a city-state where rational argument was king, and curiosity and knowledge were valued for their own sake. Occupations favored the autonomous individual – herding, hunting, trading, fishing. Intellectual rebels could move cities to retain the ability for free inquiry, and the clashing of so many customs may have led to the development of formal logic to help deal with the frequent contradiction of opinion. In contrast, the Chinese population by and large belongs to the same ethnic group. Rarely were people with different beliefs and customs encountered, and because many people were farmers who depended on joint irrigation, agreed-upon norms and harmony with one's neighbors were the goal. From Nisbett's discussion, one might infer that it is the ecology that led to the development of these features of culture in the first place.

Assumptions about individualism - and language's role

Nisbett also talks about assumptions. Westerners, he says, consider people to be individuals, assuming that everyone is in control of his/her own behavior, oriented toward goals, striving to be different from everyone else, and preferring justice to be blind. This is Zuckerberg's assumption, in his above quote.

But not everyone thinks that way. Nisbett notes that East Asians tend to be more concerned with coordinated action and group goals, fitting in, and negotiating a “middle way” that will satisfy particular disagreeing parties. In Confucian philosophies, man cannot exist alone. This has interesting implications for how people understand themselves and how a self-concept is developed! East Asians tend to think that people are defined by their relationships to other people. This is reflected in their languages: Chinese has no word for “individualism” and Japanese has many “I” words, using different words to refer to the self in relation to parents, friends, or professors. East Asians, when describing themselves, refer to their social roles and find it difficult to not specify situations and contexts. Westerners explain personality traits, role categories, and activities – none of which are solely dependent on context.

_spray from a waterfall, red layered rocks above in the sunlight and green bushy trees in the shadows below_

What I wondered, while reading, was this: How does cultural emphasis on individualism versus collectivism change a person's concept of self? Fivush & Nelson (PDF) (2004) suggested that autobiographical memory and a concept of self are partially developed through an awareness of self versus other. Wang & Ross (2007) proposed that language is very important to autobiographical memory, and Ratcliffe (2007) suggested that a person might learn to distinguish the self as an individual through interactions with others – but Ratcliffe is a Westerner! Do Westerners build up a concept of self in a different way than East Asians? Does the fact that people who speak certain East Asian languages have few if any explicit ways to refer to individualism or to an “I” without reference to other people influence them to conceive of themselves in a more relational, collectivist way? This points to a deeper question: How much do people's languages impact their thoughts, conceptions, beliefs, and perceptions? Nisbett presented examples of how language might change how we think about the world around us. E.g., Westerners tend to learn nouns faster – nouns are objects, inert, and tend to be emphasized more in parent-child conversations. Verbs, which are reactive and about relationships, are more salient in East Asian languages. The properties of the language and how the language is used help drive the object versus relation and individual versus collective dichotomies we see across cultures. Again, I see the same paradoxical question: which came first, the language, or the concepts? How and why did these language differences originally evolve?

An interesting question here, with regards to the role of language priming for certain ways of thought, and differences in memory and recall, is this: Do people focus on things (such as objects, situations, and contexts) because they regard them as causally important, or do they regard them as casually important because they focus on them? Regardless of which statement is more true – and perhaps neither is – this statement highlights the role of interpretation. Nisbett discussed a study in which American students were primed to think either interdependently or independently. Students primed for independence rated individualist values as higher and collectivist values as lower; if primed for interdependence, the opposite was true. In an unprimed condition, American students rated individualist values higher while Hong Kong students rated collectivist values higher – but if primed for either case, all the students showed the aforementioned trend. This is interesting because Westerners, in their everyday lives, are constantly being primed as individuals, while East Asians are being primed with interdependence cues. Nisbett offers anecdotes of people who switched locations in the world and subsequently started behaving more independently or interdependently. Context matters!

Harmony vs agency

_sun beams through an array of puffy clouds over a grey-blue ocean_

Nisbett also explains the ideas of erabi and awase. Erabi is active, agentic: the idea that people can freely manipulate their environments to suit their own purposes. Awase is harmonious, fitting in: the idea that people adjust themselves to their environments rather than trying to change them. The Western versus East Asian dichotomy is clear here. Are Westerners resistant to context-based models of the world, to theories such as Pentland's (2007) that language may not do as much as we think, and to the general idea that individuals are subject to external forces and influences because of their erabi style? Perhaps this is also why the illusion of conscious will is so appealing – do Westerners have more of an obsession with free will than do East Asians? Nisbett notes later than East Asians report feeling less in control of their lives than do Westerners, but that they have less of an issue with this – instead of trying to control situations, they try to adjust them. East Asians also tend to be less susceptible to illusions of control than Westerners.

I am reminded of a quote from Nikos Kazantzakis: “Since we cannot change reality, let us change the eyes that see reality.” It puts me in mind of expectations. Peoples' experiences set up their expectations about significance and meaning of future experiences – their culture influences what experiences they have. The same events don't mean the same thing to everyone. In the context of this person's experiences so far, different events may have been encountered more frequently, different behaviors may have been encouraged or discouraged, and different values emphasized. Nisbett (2003) discusses several studies that suggested East Asians are not as surprised by unexpected outcomes as are Westerners. This could be because they are more accepting of change to begin with – their world view anticipates that no situation will stay constant. Westerners, on the other hand, presume linearity of trends – the fact that they predict a trend to continue in its same direction could lead to their greater surprise when that prediction turns out to be false.

In sum: Agent, environment

In summary: Culture constantly surrounds us. It shapes how the people we interact with react to and interpret their environments, which in turn shape how they interact with us and what they emphasize in those interactions. It shapes and is shaped by language; language shapes and is shaped by our expectations and experiences. We have to keep in mind, however, that cultural differences are averages. Nisbett is careful to note this. Any individual person may not conform to the cultural norms. Although culture is a remarkably important context for a human, the development of a person in a culture is not quite so set as a cell being cultured in a petri dish. It is still the dynamic interactions between genes and an environment that develop a phenotype -- an agent plus an environment. The environment, for a person, includes that person's culture. A person's past experiences with aspects of their culture – e.g., parent speaking styles, emphasis on objects versus relations, language – will influence that person's present behavior. Oyama (2000a, 2000b) said we cannot attribute development solely to genes. Neither can development be attributed solely to culture, nor to the wider environment. It is through the interaction of all these contexts that we get functioning organisms.

References

Fivush, R. & Nelson, K. (2004) Culture and Language in the Emergence of Autobiographical Memory. Psychological Science, 15 (9), 573 – 577. [PDF]

Nisbett, R. (2003). The Geography of Thought. New York, NY: Free Press.

Oyama, S. (2000a). Evolution's Eye: A Systems View of the Biology-Culture Divide. Durham, NC: Duke University Press.

Oyama, S. (2000b). The Ontogeny of Information: Developmental Systems and Evolution. Durham, NC: Duke University Press.

Pentland, A. (2007). On the collective nature of human intelligence. Adaptive Behavior, 15 (2), 189-198. [PDF]

Ratcliffe, M. (2007). Rethinking Commonsense Psychology. New York, NY: Palgrave MacMillian.

Wang. Q., & Ross, M. (2007). Culture and Memory. In S. Kitayama & D. Cohen, (Eds.), Handbook of Cultural Psychology (pp. 645-667). New York, NY: The Guilford Press.


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silhouettes of bushy trees against a pastel sky specked with clouds

Take a sunset.

Take a blue like the ocean swells on a cool autumn day, shining with sunlight reflected off impenetrable depths, and paint it across the sky. Let it fade, lighter and grayer, slate blue and navy, into shades of yellow, orange, purple-red behind the silhouettes of bare-branched trees. Crush the petals of sunflowers, poppies, and scarlet zinnias; stir these and smear them along the horizon. The trees are black, almost, backlit and describable by some combination of "weathered" and "tranquil" and "majestic."

Take that sunset. Take all the connotations of finality, culmination, and conclusion. Fear, frailty, and beauty.

Now add the smell of possibility.

Stretch out the boundary: this is not a denouement, but an edge, a line to cross between this moment and the next. This is potential.

yellow sun setting over dark hills and navy water, faded sunset

Crisp air, cold and invigorating. Cracked pavement under your feet, wet from rain or melting snow. A feeling, deep in your gut, that this, the right here, right now, is going to change.

The term "bittersweet" applies. This is a contradiction, a paradoxical sense of endings and beginnings, a commencement and a climax. This is all the strange and wondrous things that belong to each.

Are you afraid? Are you excited?

This is a surreal meld of intoxication, terror, and melancholy. This is the jump out the airplane door, the hope of a parachute inflating, the exhilaration at both falling away and falling towards.

Nothing lasts forever.

curve of the earth with dark blue above and glowing yellow-red on the horizon

What do you leave behind? The familiar was comfortable and in the dark lies the unknown. What will you see when the sun sinks below the horizon? What happens when your feet hit the ground?

This sunset feeling: this is change.

What adventure next?


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me, at a desk, in the lab, working on documentation at a computer

As my undergrad years draw to a close, I've compiled a list of internships and related opportunities for students in Cognitive Science and Computer Science. Most programs are also open to students in other engineering and technology fields and are not limited to undergraduate students!

Take a look! Pass along the page to anyone you know who may find it useful. Although deadlines for some summer 2011 programs have passed, many have March or April deadlines, and many of the semester or year-round programs have later deadlines.


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Northeast Conference Champions

That's right: For the first time in program history, the VC Women's Fencing team has triumphed over the other schools in our conference!

I just wanted to give us a shoutout. We've been having a great season, going 30-6 so far -- certainly the best in my time at Vassar, both personally and as a team. This was a good year for it, too. I'm going to miss the team when I graduate.

Take a look at the official Vassar Athletics story!


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