Dove e perché c’è mobilità sociale: la mappa americana

Focus

Convegno

Nathaniel Hendren
Le chance di uscire dalla povertà negli Stati Uniti dipendono da dove si cresce: alcune aree favoriscono la mobilità verso l’alto, altre generano una disuguaglianza persistente. Quali sono le caratteristiche dei luoghi che favoriscono la mobilità? E quali le implicazioni di questa geografia sul piano delle politiche economiche?

introduce Stefano Lepri

Nathaniel Hendren Dal luglio 2013 è Assistant Professor al Dipartimento di Economia dell’Harvard University. La sua borsa di studio si concentra sulla mobilità intergenerazionale; sulla tassazione ottimale; sullo stato sociale e le imperfezioni del sistema assicurativo. Ha trascorso l’anno accademico 2012-2013 presso NBER grazie ad una borsa di studio post-dottorato, incentrata sullo studio di tematiche legate all’invecchiamento e la salute. La sua tesi di dottorato ha ricevuto il premio John Heinz Dissertation Award dalla National Academy of Social Insurance e il premio dell’Associazione Ernst Meyer di Ginevra. Sta attualmente lavorando con Raj Chetty, grazie ad un contributo della National Science Foundation, per studiare percorsi di opportunità politiche e mobilità intergenerazionale. Ha pubblicato articoli in importanti riviste scientifiche come “Econometrica” e il “Quarterly Journal of Economics”.

parte di: Festival dell'economia

organizzazione: Promotori Provincia Autonoma di Trento, Comune di Trento, Università degli Studi di Trento - Organizzatori Editori Laterza - Collabora Sole 24 Ore

eZ debug

Clear cache: Quick settings: Debug output Debug redirection Template debug Inline template debug List of used templates SQL debug output
Timing:	Apr 08 2026 14:20:46
Script start
Timing:	Apr 08 2026 14:20:47
Module start 'layout'
Timing:	Apr 08 2026 14:20:47
Module start 'content'
Debug: ezpI18n::translateText	Apr 08 2026 14:20:48
Missing translation for message in context: 'opencontent'. The untranslated message is: 'Come arrivare'
Error: eZTemplate @ extension/oc_tcu/design/tcu/templates/atoms/gallery.tpl:17[2]	Apr 08 2026 14:20:48
Unknown template variable 'title' in namespace ''
Timing:	Apr 08 2026 14:20:48
Module end 'content'
Debug: ezpI18n::translateText	Apr 08 2026 14:20:48
Missing translation for message in context: 'kernel/navigationpart' with comment: 'Navigation part'. The untranslated message is: 'contentclassmanager'
Debug: ezpI18n::translateText	Apr 08 2026 14:20:48
Missing translation for message in context: 'kernel/navigationpart' with comment: 'Navigation part'. The untranslated message is: 'Apps'
Debug: ezpI18n::translateText	Apr 08 2026 14:20:48
Missing translation for message in context: 'kernel/navigationpart' with comment: 'Navigation part'. The untranslated message is: 'Amministrazione Trasparente'
Debug: ezpI18n::translateText	Apr 08 2026 14:20:48
Missing translation for message in context: 'kernel/navigationpart' with comment: 'Navigation part'. The untranslated message is: 'eZTags'
Error: eZTemplate @ extension/ocbootstrap/design/ocbootstrap/templates/canonical_link.tpl:1[0]	Apr 08 2026 14:20:49
Unknown template variable 'pagedata' in namespace ''
Error: eZTemplate @ extension/ocbootstrap/design/ocbootstrap/templates/canonical_link.tpl:1[0]	Apr 08 2026 14:20:49
Unknown template variable 'pagedata' in namespace ''
Timing:	Apr 08 2026 14:20:49
Script end

Main resources:

Total runtime	2.1921 sec
Peak memory usage	29,440.0000 KB
Database Queries	144

Timing points:

Checkpoint	Start (sec)	Duration (sec)	Memory at start (KB)	Memory used (KB)
Script start	0.0000	0.0983	4,816.5938	1,693.5781
Module start 'layout'	0.0984	0.0808	6,510.1719	678.8125
Module start 'content'	0.1791	1.8212	7,188.9844	19,153.3984
Module end 'content'	2.0003	0.1917	26,342.3828	1,554.8281
Script end	2.1920		27,897.2109

Time accumulators:

Accumulator	Duration (sec)	Duration (%)	Count	Average (sec)
Ini load
Load cache	0.1507	6.8763	35	0.0043
Check MTime	0.0684	3.1189	35	0.0020
PostgreSQL Cluster
DB queries	0.0184	0.8395	16	0.0012
Postgresql Total
Database connection	0.0046	0.2104	1	0.0046
Postgresql queries	0.5988	27.3147	144	0.0042
Looping result	0.0000	0.0000	0	0.0000
MySQL Cluster
DFS operations	0.0003	0.0148	1	0.0003
TS translator
TS init	0.0773	3.5246	7	0.0110
TS cache load	0.0746	3.4037	7	0.0107
TS context load	0.0729	3.3259	7	0.0104
Template Total	1.7704	80.8	3	0.5901
Template load	0.5693	25.9699	3	0.1898
String conversion in template resource	0.0008	0.0380	28	0.0000
Template parser: create text elements	0.0206	0.9415	28	0.0007
Template parser: remove whitespace	0.0037	0.1694	28	0.0001
Template parser: construct tree	0.2993	13.6552	28	0.0107
Template load and register function	0.0144	0.6558	10	0.0014
Template processing	1.2010	54.7872	3	0.4003
states
state_id_array	0.0037	0.1674	4	0.0009
state_identifier_array	0.0049	0.2250	5	0.0010
Override
Cache load	0.3692	16.8436	43	0.0086
Sytem overhead
Fetch class attribute can translate value	0.0042	0.1909	1	0.0042
Fetch class attribute name	0.0822	3.7507	15	0.0055
XML
Image XML parsing	0.0109	0.4991	1	0.0109
class_abstraction
Instantiating content class attribute	0.0002	0.0105	15	0.0000
General
String conversion	0.0003	0.0120	30	0.0000
Note: percentages do not add up to 100% because some accumulators overlap

CSS/JS files loaded with "ezjscPacker" during request:

Cache	Type	Packlevel	SourceFiles
	CSS	0	design/base/stylesheets/core.css extension/ocbootstrap/design/ocbootstrap/stylesheets/plugins/leaflet/leaflet.css extension/ocbootstrap/design/ocbootstrap/stylesheets/plugins/leaflet/map.css extension/ocbootstrap/design/ocbootstrap/stylesheets/plugins/leaflet/MarkerCluster.css extension/ocbootstrap/design/ocbootstrap/stylesheets/plugins/leaflet/MarkerCluster.Default.css
	JS	0	extension/ocmaps/design/standard/javascript/leaflet.js extension/ocbootstrap/design/ocbootstrap/javascript/insertmedia.js extension/ezjscore/design/standard/javascript/jquery-1.10.2.min.js extension/ocbootstrap/design/ocbootstrap/javascript/plugins/leaflet/leaflet.js extension/ocbootstrap/design/ocbootstrap/javascript/plugins/leaflet/Leaflet.MakiMarkers.js extension/ocbootstrap/design/ocbootstrap/javascript/plugins/blueimp/jquery.blueimp-gallery.min.js

Templates used to render the page:

Usage	Requested template	Template	Template loaded
1	node/view/full.tpl	full/event.tpl	extension/oc_tcu/design/tcu/override/templates/full/event.tpl
1	parts/opengraph_set_persistent.tpl	<No override>	extension/ngopengraph/design/standard/templates/parts/opengraph_set_persistent.tpl
4	content/datatype/view/ezstring.tpl	<No override>	design/standard/templates/content/datatype/view/ezstring.tpl
3	content/datatype/view/ezxmltext.tpl	<No override>	extension/ocembed/design/standard/templates/content/datatype/view/ezxmltext.tpl
5	content/datatype/view/ezxmltags/paragraph.tpl	<No override>	extension/ocbootstrap/design/ocbootstrap/templates/content/datatype/view/ezxmltags/paragraph.tpl
3	content/datatype/view/ezobjectrelationlist.tpl	<No override>	extension/oc_tcu/design/tcu/templates/content/datatype/view/ezobjectrelationlist.tpl
3	content/view/embed.tpl	<No override>	extension/ocbootstrap/design/ocbootstrap/templates/content/view/embed.tpl
1	content/datatype/view/ezxmltags/line.tpl	<No override>	design/standard/templates/content/datatype/view/ezxmltags/line.tpl
1	content/datatype/view/ezxmltags/strong.tpl	<No override>	extension/ocbootstrap/design/ocbootstrap/templates/content/datatype/view/ezxmltags/strong.tpl
1	parts/social_buttons.tpl	<No override>	extension/oc_tcu/design/tcu/templates/parts/social_buttons.tpl
1	parts/event/dates.tpl	<No override>	extension/oc_tcu/design/tcu/templates/parts/event/dates.tpl
1	content/datatype/view/ezgmaplocation.tpl	<No override>	extension/oc_tcu/design/tcu/templates/content/datatype/view/ezgmaplocation.tpl
1	content/datatype/view/ezemail.tpl	<No override>	extension/ocbootstrap/design/ocbootstrap/templates/content/datatype/view/ezemail.tpl
1	content/datatype/view/ezurl.tpl	<No override>	extension/ocbootstrap/design/ocbootstrap/templates/content/datatype/view/ezurl.tpl
1	atoms/gallery.tpl	<No override>	extension/oc_tcu/design/tcu/templates/atoms/gallery.tpl
1	content/datatype/view/ezimage.tpl	<No override>	extension/oc_tcu/design/tcu/templates/content/datatype/view/ezimage.tpl
1	atoms/meta.tpl	<No override>	extension/oc_tcu/design/tcu/templates/atoms/meta.tpl
1	print_pagelayout.tpl	<No override>	design/standard/templates/print_pagelayout.tpl
1	page_head.tpl	<No override>	extension/oc_tcu/design/tcu/templates/page_head.tpl
1	parts/opengraph_persistent.tpl	<No override>	extension/ngopengraph/design/standard/templates/parts/opengraph_persistent.tpl
1	canonical_link.tpl	<No override>	extension/ocbootstrap/design/ocbootstrap/templates/canonical_link.tpl
1	link.tpl	<No override>	extension/oc_tcu/design/tcu/templates/link.tpl
1	page_mainarea.tpl	<No override>	design/standard/templates/page_mainarea.tpl
1	page_warning.tpl	<No override>	design/standard/templates/page_warning.tpl
1	page_copyright.tpl	<No override>	design/standard/templates/page_copyright.tpl
1	setup/debug_toolbar.tpl	<No override>	design/standard/templates/setup/debug_toolbar.tpl
1	setup/clear_cache.tpl	<No override>	design/standard/templates/setup/clear_cache.tpl
1	setup/quick_settings.tpl	<No override>	design/standard/templates/setup/quick_settings.tpl
Number of times templates used: 41 Number of unique templates used: 28

Time used to render debug report: 0.0009 secs

Dove e perché c’è mobilità sociale: la mappa americana

quando

dove

contatti