mirror of
https://github.com/jackyzha0/quartz.git
synced 2025-12-24 05:14:06 -06:00
66 lines
2.5 KiB
Markdown
66 lines
2.5 KiB
Markdown
---
|
|
title: "15-mental-models-representation-matters-distributing-cognition"
|
|
aliases:
|
|
tags:
|
|
- info203
|
|
- lecture
|
|
sr-due: 2022-04-29
|
|
sr-interval: 3
|
|
sr-ease: 250
|
|
---
|
|
|
|
|
|
doors are simple. But they are still done wrong very often. Incorrect labelling can give the user a wrong mental model - widening the "gulf of execution". Signifiers like handles, can create a certain mental model making you pull it. These are easier to process than labels like push and pull. Our brains are lazy, we will choose the easiest option.
|
|
|
|
Door is very simple compared to computer interface. Yet they are still done wrong.
|
|
|
|
"A conceptial model mismatch (use has the wrong mental model)"
|
|
"Increases the Gulf of Execution (suporting the right model narrows it)"
|
|
|
|
|
|
|
|
# Mental Models
|
|
- mental models are created by experience, metaphors, and analogical reasoning
|
|
- these models are developed further through interaction with the system
|
|
- designers (wrongly) often expect the users model to be the same as theirs
|
|
|
|
A mental model mistach leads to:
|
|
- slow performance
|
|
- errors
|
|
- frustration
|
|
|
|
[participant-observation](notes/participant-observation.md) appretiships (and other techniques such as [evaluating-designs](notes/evaluating-designs.md)) can uncover these mismatches.
|
|
|
|
## Slips vs mistakes
|
|
|
|
| Slip | Mistake |
|
|
|:-----------|:----------------------------------|
|
|
| accidental | on purpose (due to model mistach) |
|
|
|
|
|
|
## How to create good mental models
|
|
- [Direct Manipulation](notes/direct-manipulation-video.md)
|
|
- leveraging real world metphors
|
|
- this gives is a good idea of how each object works and how to control it
|
|
|
|
# Representation Matters and Distributing cognition
|
|
|
|
use representatio nthat does not require user to memoreise things.
|
|
|
|
"solving a problem simply means representing it so as to make the solution transparent" - Herbert Simon, The sciences of the Artificial
|
|
|
|
memory games make finding pairs hard by introducing rules. This often happens in computers interfaces needlessly difficult to use
|
|
|
|
depeding o nhow you represent a problem, you can make is easy or hard.
|
|
|
|
## Working memory
|
|
|
|
users have a working memory (2±2 limit). You shouldn't require users to remember anything that you could put on a screen.
|
|
|
|
If something takes a lot of time. You wil get distracted, and forget something.
|
|
|
|
|
|
## Naturalness principle
|
|
|
|
- experiemental cognition is raised when the properties of the representation match the properties of the thing being represented
|
|
- |