promises and perils of rewards: the role of intrinsic motivation … version-futreed 2… · role...
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PROMISES AND PERILS OF REWARDS: THE
ROLE OF INTRINSIC MOTIVATION IN EDUCATION
Kou Murayama
Department of Psychology, University of Reading, UK
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Question
• Is giving rewards or incentives a reliable and effective
way to increase students’ motivation and performance?
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• Opinions are divided…
• Some argue rewards work pretty well.
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• Opinions are divided…
• Some strongly oppose to rewards.
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Aim of the talk
• Provide a balanced discussion on the potential benefits and
danger of using rewards in education, based on scientific
(both psychological and neuroscientific) evidence.
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Main points
• 1. Rewards do indeed have positive effects: They help the
consolidation of learning.
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Reward and Learning Consolidation
• One of the hot topics in cognitive neuroscience (Gruber et
al., 2016; Shohamy & Adcock, 2010; Wittman et al., 2005; Mather & Schoeke, 2011;
Adcock et al., 2006).
• Rewards (i.e. money) enhance memory consolidation
through the activation in the striatum (reward network).
Sanfey (2007) Responses to monetary cue
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Mechanisms Lisman & Grace (2005)
Reward (e.g., money)
Reward network in the brain is
activated
Memory consolidation
(hippocampus)
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Adcock et al. (2006, Neuron)
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2000ms Is the object natural
or man-made?
> < >
9500ms
Flanker task
Next task is
stopwatch task
1500ms
Money cue
Next task is
watch-stop task
1500ms
Control cue 1:24
¥ 150
Press a button to
stop the watch
3:03
¥ 200
1:24
¥ 150
Press a button after the
watch automatically stops
3:03
¥ 150
Participants played a game by which they
can get money
• Surprise memory test
• Immediate
• Delayed (one week later) Murayama & Kitagami (JEP-G, 2014)
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Results
0.3
0.5
0.7
0.9
ImmediateRecognition
Test
DelayedRecognition
Test
Replication(Delayed)
Hit R
ate
Control Cue
Money Cue
* *
Murayama & Kitagami (JEP-G, 2014)
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• Rewards enhance memory consolidation even for the
materials that are irrelevant for the rewards.
• Rewards might have a hidden positive effect to enhance learning
consolidation in general.
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Main points
• 1. Rewards do indeed have positive effects: They help the
consolidation of learning.
• 2. “Intrinsic rewards” have the same positive effects.
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• What are the rewards?
• Food
• Money
• Gold stars
• Teachers’/parents’ praise
• Friends’ recognition
• Feeling of value (importance)
• Satisfaction from the success
• Task enjoyment
“Extrinsic” rewards
“Intrinsic” rewards
Motivation based on intrinsic rewards is often
called “intrinsic motivation”
Most previous research
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Do intrinsic rewards work like extrinsic
rewards?
• One type of intrinsic rewards = interest and/or curiosity.
• I have no special talents. I am only
passionately curious
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Extrinsic
rewards
Intrinsic rewards
(e.g., curiosity,
interest)
Activate the reward network
in the brain?
Enhance the learning
consolidation?
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Orpheus
Eurydice Orpheus
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Curiosity-based decision making paradigm
You passed
Want to know
the secret?
1 7
Secret!
Take lottery?
You lost…
Food
condition
Curiosity
condition
You won!
Got a ticket to
the secret!
Decision
Rating
Scanned
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Reward network is related to the decision of accepting
electric shocks for both magic tricks and foods.
CN
[9,15,3]
VTA [-6,-12-12]
Greater activities in:
- Caudate nucleus (dorsal striatum) &
- Midbrain/VTA (ventral striatum)
p<0.05, FWE-corrected
at cluster level
0
0.5
1
1.5
2
2.5
3
Food Magic
Accept
Reject
Lau et al. (in prep)
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Extrinsic
rewards
Intrinsic rewards
(e.g., curiosity,
interest)
Activate the reward network
in the brain?
Enhance the learning
consolidation?
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Curiosity and reward processing
Gruber et al. (2014, Neuron)
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Extrinsic
rewards
Intrinsic rewards
(e.g., curiosity,
interest)
Activate the reward network
in the brain?
Enhance the learning
consolidation?
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Main points
• 1. Rewards do indeed have positive effects: They help the
consolidation of learning.
• 2. “Intrinsic rewards” have the same positive effects.
• 3. Extrinsic rewards can undermine intrinsic motivation.
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• Extrinsic rewards have strong power to enhance
memory consolidation.
• This may be driven by the dopaminergic
activation in the reward network (e.g., striatum).
• BUT, are there any downsides?
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Undermining effect
• Extrinsic reward can undermine intrinsic
motivation, because intrinsic motivation is
easily crowded out by external forces (Deci &
Ryan, 1985)
• Undermining effect happens only when the
task is interesting (Deci et al., 1999).
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• Imagine you enjoy solving maths problems. You
voluntarily work on maths problem solving without
being told by anyone.
• One day, a teacher said to students: “I will give
you gold stars if you solve many math problems”.
• Because you wanted to get gold stars, you
worked hard to solve maths problems to get gold
stars. You actually got a lot of gold stars.
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• Clearly, you were motivated by extrinsic rewards.
• But would you be still motivated for maths after
the gold star scheme is over and teacher no
longer gives you gold stars?
• Undermining effect indicates that your enjoyment
for maths would be lost after the gold star
scheme is over.
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Reward instruction
1st session
Reward payment
Waiting period
2nd session
SCAN
SCAN
Murayama et al. (PNAS, 2010, featured in BBC)
0 00 3 93 5 04
0 * 0 * 1 *
Reward group: 1.2GBP/success Control group: no bonus
Task: Stopwatch task (interesting task)
Reward group: no bonus Control group: no bonus
Intrinsic motivation
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Behavioral Results (Waiting period)
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Striatal activation (in response to
success feedback)
Control group
Reward group
1st session 2nd session
Reward promised Reward removed
Murayama et al. (PNAS, 2010, featured in BBC news)
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Extrinsic rewards and learning reconsidered
• Extrinsic rewards can undermine intrinsic motivation.
• Does the undermining effect have implications about learning?
• When a student is enjoying a task, is it a good idea to give rewards to the student with the aim to boost learning?
Murayama & Kuhbandner (2011, Cognition)
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• Task: Trivia question paradigm • Uninteresting trivia items: “What is the name of the author
of the book "1984"?” “What is the national flower of Spain?”
• Interesting trivia items: “What is the animal that has the shortest sleep a day?” “What is the only consumable food that won’t spoil forever?”
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• Participants: Assigned to one of the two groups.
• Reward group
• No-reward group
Learning session
Each trivia item is
presented for 10 seconds.
Answer the trivia items
Correct answer is
presented for 4 sec.
Immediate
memory test
Each trivia item
is presented for
10 sec.
Recall the
answer
Delayed
memory test
(1 week later)
Each trivia item
is presented for
10 sec.
Recall the
answer
Monetary
rewards
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Reward enhances memory after a delay (i.e.,
memory consolidation)
n.s.
p < .05
* Collapsing both interesting and uninteresting questions
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But it is limited to boring materials!
Murayama & Kuhbandner (2011, Cognition)
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• Extrinsic incentives are not effective to facilitate learning
when students are enjoying the task.
• If someone is interested in a learning material, giving
rewards is just a waste of money.
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Main points
• 1. Rewards do indeed have positive effects: They help the
consolidation of learning.
• 2. “Intrinsic rewards” have the same positive effects.
• 3. Extrinsic rewards can undermine intrinsic motivation.
• 4. Intrinsic rewards have sustainable effects.
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• Extrinsic rewards are effective to motivate learning, “as
long as you keep giving rewards”.
• Once rewards are removed, students may no longer be
motivated (and intrinsic motivation may be decreased).
• In other words, the positive effects of extrinsic rewards are
not sustainable.
• E.g., do they study out of the school context?
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• What about intrinsic rewards?
• When you enjoy studying, you can find another interest in
the topic, which would further strengthen your enjoyment.
• In other words, intrinsic rewards are sustainable and even
boost over time.
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7 8 9 10
12
51
35
14
51
55
Grade
Ma
th A
ch
ieve
me
nt
Sco
re
High IQ students
Low IQ students
IQ is strongly related to math achievement at the baseline
However, growth in math achievement is unrelated to the IQ.
IQ is related to concurrent achievement, but not to learning.
5-Year Longitudinal Study of Math
Achievements in German Schools (N = 3,530)
Murayama, Pekrun et al., (2013, Child Development; featured in Time Magazine, Wall Street Journal, etc.)
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7 8 9 10
125
135
145
155
Grade
Math
Achie
vem
ent S
core
High-growth students
Low-growth students
5-Year Longitudinal Study of Math
Achievements in German Schools
Students with high intrinsic motivation for mathematics.
Students with low intrinsic motivation for mathematics.
Unlike the IQ, intrinsic motivation facilitates long-term consolidation of learning.
* IQ is controlled
Murayama, Pekrun et al., (2013, Child Development; featured in Time Magazine, Wall Street Journal, etc.)
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Extrinsic
rewards
Intrinsic rewards
(e.g., curiosity,
interest)
Activate the reward network
in the brain?
Enhance the learning
consolidation?
Sustainable effect?
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Main points
• 1. Rewards do indeed have positive effects: They help the
consolidation of learning.
• 2. “Intrinsic rewards” have the same positive effects.
• 3. Extrinsic rewards can undermine intrinsic motivation.
• 4. Intrinsic rewards have sustainable effects.
• 5. We can use extrinsic rewards as “an entry to intrinsic
motivation.”
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• It seems that intrinsic rewards have better features.
• Why not pursuing intrinsic motivation in education then?
• A problem.
There is no robustly established method to
facilitate intrinsic motivation.
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Feeling of
competence
Feeling of
relatedness
Feeling of
autonomy
(self-determination)
Self-efficacy belief
Intrinsic motivation
Self-determination theory (Deci & Ryan, 1985)
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It is easy to say, but…
• Feeling of competence, feeling of relatedness, and feeling
of autonomy are important to facilitate intrinsic motivation,
but in reality, it is not easy to enhance the feelings of
students.
• If a student is completely unmotivated for mathematics,
how can we increase the feeling of competence of that
student?
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Potential strategy
• Both extrinsic rewards and intrinsic rewards are supported
by the same neural substrates.
• Then, it should be possible to transform extrinsic
motivation into intrinsic motivation.
Extrinsic
motivation
Intrinsic
motivation
Reward
network
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“Extrinsic rewards as an entry point
to intrinsic motivation”
• When students are not motivated at all, it is not a bad idea
to give rewards to motivate them.
• At the same time, try to support students’ feeling of
competence, relatedness, and autonomy.
• Then it is possible that initial extrinsic motivation eventually
transforms to intrinsic motivation.
• Strong scientific support for this idea has not been provided
yet, but several theories suggest that this is very likely
(Ryan & Deci, 2000; Renninger & Hidi, 2016).
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Main points
• 1. Rewards do indeed have positive effects: They help the
consolidation of learning.
• 2. “Intrinsic rewards” have the same positive effects.
• 3. Extrinsic rewards can undermine intrinsic motivation.
• 4. Intrinsic rewards have sustainable effects.
• 5. We can use extrinsic rewards as “an entry to intrinsic
motivation.”
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Postdoc/Student/RAs
Dr. Johnny Lau
Dr. Lily Fitzgibborn
Dr. Carolyn McNabb
Greta Fastrich
Laura Burgess
Stef Meliss
Emmanuel Daveau
Collaborators
Andrew Elliot (Uni. Rochester)
Reinhard Pekrun (Univ. Munich)
Alan Castel (UCLA)
Kenji & Madoka Matsumoto
(Tamagawa University)
Fumiko Hoeft (UCSF)
Potential Ph. D. studentship and
postdoc position will be available
For more info, please contact