1. Input Factor
1.1. Frequency
1.2. Salience
1.3. Complexity
1.4. Type of interlocutor
2. Cognitive Factors
2.1. Cognitive Development
2.2. Cognitive Processes
2.2.1. imitation
2.2.2. analogy
2.2.3. generalisation
2.2.4. rote memorisation
2.3. Cognitive Style
2.3.1. field dependence
2.3.2. category width
2.3.3. cognitive interference
2.3.4. monitoring
3. Instructional Factors
3.1. Goals
3.2. Teacher
3.3. Method
3.4. Text
3.5. Duration
3.6. Intensity
4. Social Factors
4.1. Dominance / Nondominance
4.2. Subordination
4.3. Assimilation
4.3.1. giving up own lifestyle and values and adopting those of TL group
4.3.1.1. maximises contact
4.4. Preservation
4.4.1. maintaining own lifestyle and values and rejecting those of TL group
4.4.1.1. creates social distance
4.5. Adaptation
4.5.1. adapting lifestyle and values of TL group but maitaining own lifestyle for intragroup use
4.5.1.1. varying degrees of contact with TL group
4.6. Enclosure
4.6.1. sharing churches, schools, clubs, recreational facilities, crafts, professions and trades
4.7. Cohesiveness
4.8. Size
4.9. Congruence
4.9.1. similarity between cultures
4.10. Attitude
4.11. Intended Length of Residence in TL area
5. Affective Factors
5.1. Language Shock
5.1.1. fear of appearing comic
5.2. Culture Shock
5.2.1. anxiety resulting from the disorientation encoutered upon entering a new culture
5.3. Motivation
5.3.1. integrative motivation
5.3.1.1. meet with, talk to, find out about and become like speakers of the TL group
5.3.2. instrumental motivation
5.3.2.1. utilitarian reasons such as getting ahead in the occupation or gaining recognition
5.4. Ego-Permeability
6. Communicative Competence
6.1. grammatical competence
6.2. sociolinguistic competence
6.3. strategic competence
7. Affective Filter
7.1. barrier to acquisition that results from negative feelings or experience
8. Personal Factors
8.1. Nesting Patterns
8.2. Transition Anxiety
8.3. Reaction to Teaching Methods
8.4. Choice of Learning Strategies
9. Biological Factors
9.1. Lateralisation
9.2. Transfer
9.3. Infrasystem
10. Acquisition
10.1. definition
10.1.1. gradual development of ability in a language by using it naturally in communicative situations
11. Learning
11.1. definition
11.1.1. conscious process of accumulating knowledge of vocabulary and grammar of a language