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23	August	2016	
FIRST	IMPRESSIONS	
SUSIE	WILSON	ETIQUETTE	EXPERT.	
Youll	never	get	a	second	chance	to	make	a	great	first	impression.	Weve	all	heard	that	
an	interviewer,	or	a	stranger	at	a	party,	will	form	an	impression	of	you,	your	character,	
your	personality		an	impression	that	is	nearly	indelible		all	within	the	first	60	
seconds	of	meeting	you.	
Or	wait,	is	it	30	seconds?	Twenty?	
Two	or	three?	
Forget	whatever	figure	you	may	have	heard.	Not	to	intimidate	you,	if	you	happen	to	be	
preparing	for	a	job	or	grad	school	interview,	or	a	blind	date,	but	new	research	shows	
that	you	may	need	to	have	your	act	together	in	the	blink	of	an	eye.	
A	series	of	experiments	by	Princeton	psychologists	Janine	Willis	and	Alexander	Todorov	
reveal	that	all	it	takes	is	a	tenth	of	a	second	to	form	an	impression	of	a	stranger	from	
their	face,	and	that	longer	exposures	dont	significantly	alter	those	impressions	
(although	they	might	boost	your	confidence	in	your	judgments).	Their	research	is	
presented	in	their	article	First	Impressions,	in	the	July	issue	of	Psychological	Science.	
Like	it	or	not,	judgments	based	on	facial	appearance	play	a	powerful	role	in	how	we	
treat	others,	and	how	we	get	treated.	Psychologists	have	long	known	that	attractive	
people	get	better	outcomes	in	practically	all	walks	of	life.	People	with	mature	faces	
receive	more	severe	judicial	outcomes	than	baby-faced	people.	And	having	a	face	that	
looks	competent	(as	opposed	to	trustworthy	or	likeable)	may	matter	a	lot	in	whether	a	
person	gets	elected	to	public	office.	
Willis	and	Todorov	conducted	separate	experiments	to	study	judgments	from	facial	
appearance,	each	focusing	on	a	different	trait:	attractiveness,	likeability,	competence,	
trustworthiness,	and	aggressiveness.	Participants	were	shown	photographs	of	
unfamiliar	faces	for	100	milliseconds	(1/10	of	a	second),	500	milliseconds	(half	a	
second),	or	1,000	milliseconds	(a	full	second),	and	were	immediately	asked	to	judge	the	
faces	for	the	trait	in	question	(e.g.,	Is	this	person	competent?).	Response	time	was	
measured.	Participants	were	then	asked	to	rate	their	confidence	in	making	their	
judgments.	
Participants	judgments	were	compared	with	ratings	of	the	same	photographs	given	by	
another	group	of	participants	in	a	preliminary	study,	in	which	there	were	no	time	
constraints	for	judging	the	personality	traits	of	the	faces.	(In	that	preliminary	study,	
there	was	strong	agreement	among	the	various	participants	about	the	traits	of	the	
people	in	the	photographs.)
2	
For	all	five	of	the	traits	studied,	judgments	made	after	the	briefest	exposure	(1/10	of	a	
second)	were	highly	correlated	with	judgments	made	without	time	constraints;	and	
increased	exposure	time	(1/2	or	a	full	second)	didnt	increase	the	correlation.	Response	
times	also	revealed	that	participants	made	their	judgments	as	quickly	(if	not	more	
quickly)	after	seeing	a	face	for	1/10	of	a	second	as	they	did	if	given	a	longer	glimpse.	
Longer	exposure	times	did	increase	confidence	in	judgments	and	facilitated	more	
differentiated	trait	impressions	(that	is,	less	correlation	between	the	different	traits	for	
a	given	person).	
All	the	correlations	between	judgments	made	after	a	1/10-second	glimpse	and	
judgments	made	without	time	constraints	were	high,	but	of	all	the	traits,	
trustworthiness	was	the	one	with	the	highest	correlation.	Along	with	attractiveness,	this	
was	also	the	trait	that	participants	were	able	to	assess	most	quickly.	The	authors	
suggest,	based	on	evolutionary	psychology,	that	an	accelerated	and	accurate	ability	to	
judge	trustworthiness	in	others	may	have	evolved	as	an	important	survival	mechanism.	
But	before	you	rest	secure	in	the	knowledge	that	at	least	you	have	a	whole	1/10	of	a	
second	to	make	that	great	first	impression	at	your	next	job	interview,	the	authors	
acknowledge	that	future	research	may	well	close	that	window	even	smaller.	Other	
researchers	recently	revealed	in	Psychological	Science	that	objects	are	categorized	as	
soon	as	they	are	perceived;	something	similar,	Willis	and	Todorov	suggest,	may	be	true	
of	certain	trait	judgments.	
It	may	be	that,	to	impress	a	prospective	employer	with	your	competence	and	
trustworthiness,	or	a	prospective	mate	with	your	attractiveness,	you	can	do	it	in,	well,	
no	time.	That	may	be	a	good	or	bad	thing,	depending.

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23 August 2016 First Impressions paper