Language, Thinking, and Reasoning: Structured Study Notes for Psychology Students

Language, Thinking & Reasoning

Language

Language is the communication of information through symbols arranged according to rules. It is central to communication and closely tied to the way we think and understand the world. Language develops even in the absence of formal instruction, and language acquisition follows similar patterns across cultures.

• Definition: A system for communicating with others using signals that are combined according to rules of grammar and convey meaning.

• Example: Spoken, written, and signed languages.

Phonemes: The Ingredients

Phonemes are the basic categories of sound produced by our vocal apparatus. They are the smallest units of sound that can distinguish meaning in a language.

• Most words are made of two or more phonemes.

• Phonemes can be spelled differently: e.g., 'bait', 'weight', 'plate'.

• English: 26 letters, but 40-45 phonemes.

• Cross-linguistic differences: Hawaiian has few phonemes; Japanese has a single sound category for both L & R.

Morphemes & Syntax

Morphemes are the smallest units of meaning in a language. Syntax refers to the set of rules for constructing sentences.

• Morphemes: Most are words, but some (like 're-' in 'redo') modify meaning.

• Syntax: Rules for sentence structure. For example, 'Pizza ate I for dinner' does not follow English syntax.

Nonverbal Gestures & Culture

Nonverbal communication, such as gestures, varies across cultures and can convey different meanings.

• Examples: Peace sign, thumbs up, and other hand gestures.

Language Acquisition & Deprivation

There is a critical period for language acquisition, during which proficiency is maximal. Deprivation during this period impedes the ability to fully acquire and use language.

• Critical period: Early life is optimal for language learning.

• Case study: Genie, a child deprived of language, supports the critical period theory.

• Younger learners: The younger you are, the better you learn a new language ('less is more' theory).

Bilingualism: The Earlier the Better

Early exposure to multiple languages leads to higher proficiency. Research shows that age of acquisition is inversely related to proficiency in a second language.

Language Development

Babbling

• 1-2 months: cooing

• 4-10 months: babbling (consonants)

• Babble all sounds, then specialize in own language by 6-8 months

• Born with ability to recognize all phonemes; unused sounds are pruned

Words & Phrases

• 8-16 months: single word stage (e.g., 'up', 'mama')

• 24 months: two-word stage (e.g., 'more juice', 'mommy help')

• Telegraphic speech: 'I show book'

Sentences & More

• By age 3: use plurals and past tense, but overgeneralize (e.g., 'he runned', 'the fishes')

• By age 5: acquire all basic rules of language

How Do Children Acquire Language?

Approach	Description
Learning Theory	Language acquisition follows principles of reinforcement and conditioning. Children are praised for using language. More parental speech leads to greater proficiency. Does not fully explain grammar acquisition.
Nativist	Children are born with basic knowledge of language. The 'language organ' or language acquisition device is pre-programmed. Genes are related to language abilities. Difficult to falsify.
Interactionist	Children are pre-programmed with hardware, but develop software through exposure and environment. Adults act as directors for language acquisition. Environment produces differences in language.

Guugu Yimithirr Language

The Guugu Yimithirr language, spoken by indigenous people in Far North Queensland, Australia, uses cardinal directions (north, east, south, west) instead of words for left or right. This influences spatial cognition and perception.

How Does Language Shape Our Thinking?

Linguistic Relativity (Sapir-Whorf Hypothesis)

The language we speak influences how we think, understand, and perceive the world.

• Examples: Egocentric vs. geocentric spatial terms, time perception and metaphors, language and blame.

Thinking & Reasoning

Thinking

Thinking involves the manipulation of mental representations of information. Humans are cognitive misers, using cognitive economy to streamline mental processes.

Top-Down Processes

• Utilize pre-existing knowledge to fill in gaps

• Reduce cognitive effort and speed up processing

Concepts & Prototypes

• Prototype: The best or most typical example of a concept (e.g., a table).

• Concept: Knowledge and ideas about a set of objects, actions, or characteristics that share core properties.

• Note: Prototypes can lead to bias, reinforce stereotypes, and cause us to overlook information that does not match.

Cognitive Obstacles

• Mental set: Becoming stuck in a specific problem-solving strategy, inhibiting ability to generate alternatives.

• Functional fixedness: Difficulty conceptualizing that an object typically used for one purpose can be used for another.

Reasoning & Problem Solving

• Algorithm: A rule that guarantees a solution if applied appropriately. Only works for well-defined problems and can be time-consuming.

• Heuristic: General problem-solving framework (shortcuts, rules of thumb). Useful but can lead to cognitive biases.

Why Are Heuristics Useful (and Necessary)?

• Impossible to always consider all information

• Reduce mental effort needed to make decisions

• Simplify the decision-making process

• Are often correct, but can lead to costly errors

Types of Heuristics

Representativeness Heuristic

• Basing judgments on similarity to an abstract ideal, expectation, or stereotype

• Base rate fallacy: Failure to consider actual statistical rates

Real-World Applications

• Jury decisions

• Medical diagnoses

• Restaurant choices

• Stereotyping in social interactions

Availability Heuristic

• Basing estimates of frequency or probability on how easily examples come to mind

• Media coverage of rare events (e.g., shark attacks) can distort perception of risk

• Example study: Karlsson, Loewenstein & Ariely (2008) found people are more likely to buy insurance after experiencing a natural disaster

Anchoring Heuristic

• Relying on a single piece of information (the anchor) to inform decision-making

• Example: Judge's sentence influenced by prosecutor's recommendation

When Prosecutor Sought	Judge's Sentence
12 months	18.70 months
34 months	28.78 months

Framing

• The way a question or statement is formulated can influence decision-making

• Gain vs. loss framing, survival vs. mortality framing

• Example: '90% survival rate' vs. '10% fatality rate' for the same procedure

COVID-19 & Framing

• Loss-framed messages increase anxiety but do not impact policy attitudes or behavioral intentions

• Emotional toll of loss-framed messages

Biases in Reasoning

Hindsight Bias

• Tendency to overestimate how well we could have predicted something after it has occurred

• Clouds judgment and ability to learn from past mistakes

Monday Morning Quarterback Phenomena

• Criticizing decisions after the fact, with the benefit of hindsight

Confirmation Bias & Belief Perseverance

• Confirmation bias: Searching for evidence that confirms one's beliefs, ignoring disconfirming evidence

• Belief perseverance: Maintaining a belief even in the face of contrary evidence

Maximizing & Satisficing

• Satisficers: Settle for 'good enough'

• Maximizers: Evaluate every option

• Paradox of choice: More options can lead to less satisfaction

	6 Alternatives	30 Alternatives	Difference
Maximizers	5.64	4.73	-0.91
Satisficers	5.44	6.00	+0.46

The Downside of Heuristics & Cognitive Shortcuts

• Can lead to costly errors and bias, especially in high-stakes circumstances

• Stereotypes and prejudice (e.g., racialization of crime in news media)

• Accuracy-effort trade-off: shortcuts save effort but may reduce accuracy

Case Studies

• Guy Paul Morin: Wrongfully convicted due to being perceived as a 'weird guy' (representativeness heuristic)

• Amanda Knox: Media portrayal and circumstantial evidence led to wrongful arrest and conviction; later acquitted

Additional info: These notes expand on the original slides by providing definitions, examples, and structured tables for comparison. All key terms and concepts are explained for clarity and exam preparation.