Krashen's 6 Hypotheses of Second Language Acquisition include: 1) The Acquisition-Learning Hypothesis distinguishes between conscious learning and subconscious acquisition. 2) The Monitor Hypothesis states that conscious learning edits acquired language. 3) The Natural Order Hypothesis proposes grammatical structures are acquired in a predictable order. 4) The Input Hypothesis posits language is acquired through comprehensible input just beyond one's level. 5) The Affective Filter Hypothesis suggests emotional factors like anxiety can block acquisition. 6) The Reading Hypothesis maintains that reading increases vocabulary acquisition.

1. Krashen's 6 Hypothesis
Second Language Acquisition
Presented by
Beatriz Portillo Guevara
Galitzia Calderon Trejo

2. •About 25 years ago, a
psychologist named Stephen
Krashen transformed language
teaching. He had been
developing his ideas over a
number of years, but several
books he published in the 1980s
received widespread acceptance.

3. “Language acquisition occurs
when language is used for what
it was designed for,
communication.”
Stephen Krashen

4. Comprises of six main hypotheses:
1.Acquisition-Learning hypothesis
2.Monitor hypothesis
3.Natural Order hypothesis
4.Input hypothesis
5.Affective Filter hypothesis
6.The Reading Hypothesis
Second Language Acquisition Theory

5. The acquisition-learning
hypothesis
The “acquired system” and The
“learned system”

6. What is the difference
between
LEARNING a language
and ADQUIRING a
language?

7. Acquisition Learning
• Subconscious process
• Meaningful interaction
• Communicative act
• Product of
subconscious
• Depends on attitude
• Conscious process
• Formal instruction
• Grammar
• Product of formal
learning
• Depends on aptitude

8. Krashen’s Hypotheses:
1. The acquisition-learning hypothesis.
There is a difference between
learning, which is purposeful and
conscious, and acquisition which is
natural and subconscious.
(Markee 1997, pp. 25–26)

9. There are five different stages in the
second language acquisition process:
1. The Silent Period
2. The Early Production Period
3. The Speech Emergence Period
4. The Intermediate Production Period
5. The Advanced Production Period

10. Application for Teaching
• According to this theory, the optimal way
a language is learned is through natural
communication.

11. • As a second language teacher,
the ideal is to create a situation
wherein language is used in
order to fulfill authentic
purposes. This is turn, will help
students to ‘acquire’ the
language instead of just
‘learning’ it.

12. Krashen’s hypotheses:
2. The monitor hypothesis. This
hypothesis states that conscious
learning functions only as a monitor
to edit and correct the output of the
acquired language.
(Markee 1997, pp. 25–26)

13. Use learned language to self-
correct what is acquired.

14. Application for Teaching
•As an SL teacher it will always be a
challenge to strike a balance between
encouraging accuracy and fluency in
your students.

15. This balance will depend on numerous
variables including:
•The language level of the students
•The context of language use
•The personal goals of each student.

16. What is Communicative Competency?
•Communicative competency is the
correlation between fluency and
accuracy.

17. “Language is best taught when it is
being used to transmit messages, not
when it is explicitly taught for
conscious learning.”
(Krashen and Terrell, 1995)

18. Krashen’s hypotheses:
3. The natural order hypothesis. This
hypothesis states that grammatical
structures are acquired in a
predictable order just the same way
that the native speaker learned their
native language.
(Markee 1997, pp. 25–26)

19. Step by step
Predictable order
She is walking instead of She walked

20. •The acquisition of grammatical structures
follows a “natural order” which is
predictable.
•English is perhaps the most studied
language as far as natural order
hypothesis is concerned, and of all
structures of English, morphology is the
most studied.

21. Application for Teaching
•This hypothesis highlights the importance of
using the Target Language in the
classroom. The goal of any language
program is for learners to be able to
communicate effectively.

22. •By providing as much comprehensible input
as possible, especially in situations when
learners are not exposed to the TL outside
of the classroom, the teacher is able to
create a more effective opportunity for
language acquisition.

23. Krashen’s hypotheses:
4. The input hypothesis. The Input Hypothesis
states that students acquire language when
they need to understand input that is slightly
beyond their level of competence. “Krashen
refers to this by the formula L +1 (where L+1 is
the stage immediately following L along some
natural order.)”
(Markee 1997, pp. 25–26)

24. Application for Teaching
•According to this hypothesis, teachers
should be aware that certain structures
of a language are easier to acquire than
others and therefore language
structures should be taught in an order
that is conducive to learning.

25. •Teachers should start by introducing
language concepts that are relatively
easy for learners to acquire and then
use scaffolding to introduce more
difficult concepts.

26. Krashen’s hypotheses:
5. The affective filter hypothesis. This
hypothesis states that emotional
factors can block or affect the process
of acquisition.
(Markee 1997, pp. 25–26)

27.  The main emotional attitude
factors of motivation, self-
confidence, and anxiety can
impede language acquisition.

28. A students with high affective
filter are less likely to learn.
The teacher should promote a
low anxiety, low stress
environment.

29. •According to Krashen we acquire a
language when we are given
comprehensible input in low-anxiety
situations and when we are presented
with interesting and meaningful
messages that we actually understand.

30. Application for Teaching
•In any aspect of education it is always important
to create a safe, welcoming environment in
which students can learn. In language education
this may be especially important since in order
to take in and produce language, learners need
to feel that they are able to make mistakes and
take risks. This relates to directly to Krashen’s
hypothesis of the affective filter.

31. Krashen’s hypotheses:
6. The Reading Hypothesis. This
hypothesis states that the more we
read in a SL the greater our
vocabulary.

32. Application for Teaching
It is important to involve reading in the
language classroom to increase knowledge of
the language and the way it is used in real-life
contexts.

33. Thanks for your
attention!