Epistomology is the
branch of
philosophy that is
concerned with
knowledge
Rationalism
Knowledge is innate and
derived from reasoning,
some ideas come from
god
Plato
Descartes
Reasoned we know we must exist,
but evil daemons or god may
deceive us
God does not allow us to have clear and
distinct thoughts (perfection), he places
innate ideas into us
He only accepted beliefs of which there could be no doubt
Examined our empirical beliefs as our senses fail us all the time. We
have local doubts which are doubts about a particular sense
experience
He argued that if he was doubting, then he knew that he existed - "I think, therefore I am"
Empiricism
Knowledge is derived from
experiences and the senses
Aristotle
Locke
The mind isn't born empty,
machinery for appetites and
imagination
The mind is a
tabula rasa, aka a
blank slate
Combination, relation, and
generalisation make more
complex ideas
Hume
Distinguished two sense
experiences: impressions and ideas
- together these make more
complex ideas
Our mind is a bundle of sensations: bundle theory
Two kinds of intellectual
inquiry: relations of ideas,
and matter of fact
We trace each simple idea down to its impressions. If
no idea attaches to a term, the term has no meaning
Rationalism versus empiricism
Descartes vs Hume
Leibniz
Critical of the tabula rasa, doesn't believe the mind is
passive, instead it works on and transforms sensory
experiences and we have innate ideas
He criticised Descartes and disagreed that all
mental states are conscious. He believed
animals had feelings and souls
Rationalist
Kant
Aimed to synthesise rationalism and empiricism, the
mind can have innate knowledge AND have experience
from the senses
Distinguished noumena and phenomena
Analytic and
synthetic
statements
Analytic = tautological, thing being said in
the statement is contained in the subject,
rational knowledge
Synthetic = no tautological, giving you new information, empirical knowledge
We assume a synthetic a priori (rational) knowledge, the mind
constructs a priori to structure our experience and knowledge
Space, time, and
causality
Natural philosophophy
A philosophical approach to the natural
world, e.g., physics and chemistry.
Phrenology
A belief that a person's character can be read from their skull
Broca and Wernickes area
Example of faculty psychology - the mind
is comprised of distinct mental
components
Physiognomy
A belief that a person's character can be
read in their face, idea is tainted with
scientific racism, biased judgements
Francis
Galton
Psychophysics
Aim is to find the mathematical laws
that relate psychic quantities to physical
qualities.
Weber
Hobby was to lift two weights which revealed a
consistent threshold for each person and
condition
He also derived the two-point threshold - minimum
separation that people could report as "two points"
It relies on subjective feeling.
Discovered the Just Noticable Difference, the Weber fraction,
relationships between bodily senses, the double-sensation of pain, the
temp-weight illusion, individual differences in perception, and
receptive fields.
Fechner
Main experiment was psychophysical scaling - larger increases in physical intensity are
needed to give the same increase in perceived intensity
Wundt
Preferred an active, creative mind.
Voluntarism - we voluntarily decide what our mind attends
Titchener developed this view and broke the consciousness into its elements