Check out my new academic journal article at Political Analysis with Roberto Cerina, Christopher Barrie, Neil Ketchley: “Explaining Recruitment to Extremism: A Bayesian Hierarchical Case–Control Approach”

Abstract:

Who joins extremist movements? Answering this question is beset by methodological challenges as survey techniques are infeasible and selective samples provide no counterfactual. Recruits can be assigned to contextual units, but this is vulnerable to problems of ecological inference. In this article, we elaborate a technique that combines survey and ecological approaches. The Bayesian hierarchical case–control design that we propose allows us to identify individual-level and contextual factors patterning the incidence of recruitment to extremism, while accounting for spatial autocorrelation, rare events, and contamination. We empirically validate our approach by matching a sample of Islamic State (ISIS) fighters from nine MENA countries with representative population surveys enumerated shortly before recruits joined the movement. High-status individuals in their early twenties with college education were more likely to join ISIS. There is more mixed evidence for relative deprivation. The accompanying extremeR package provides functionality for applied researchers to implement our approach.

Click here to read the article in full.

New issue of The Islamic State’s newsletter: “al-Nabā’ #417″

For prior newsletter issues see: #416, #415#414#413#412#411#410#409#408#407#406#405#404#403#402#401#400#399#398#397#396#395#394,  #393#392#391#390#389#388#387#386#385#384#383#382#381#380#379#378#377#376#375#374#373#372#371#370#369#368#367#366#365#364#363#362#361#360#359#358#357#356#355#354#353#352#351#350#349#348#347#346#345#344#343#342#341#340#339#338#337#336#335#334#333#332#331#330#329#328#327#326#325#324#323#322#321#320#319#318#317#316#315#314#313,  #312#311#310#309#308#307#306#305#304#303#302#301#300#299#298#297#296#295#294#293#292#291#290#289#288#287#286#285#284#283#282#281#280#279#278#277#276#275#274#273#272#271#270#269#268#267#266#265#264#263#262#261#260#259#258#257#256#255#254#253#252#251#250#249#248#247#246#245#244#243#242#241#240#239#238#237#236#235#234#233#232#231#230#229#228#227#226#225#224#223#222#221#220#219#218#217#216#215#214#213#212#211#210#209#208#207#206#205#204#203#202#201#200#199#198#197#196#195#194#193#192#191#190#189#188#187#186#185#184#183#182#181#180#179#178#177#176#175#174#173#172#171#170#169#168#167#166#165#164#163#162#161#160#159#158#157#156#155#154#153#152#151#150#149#148#147#146#145#144#143#142#141#140#139#138#137#136#135#134#133#132#131#130#129#128#127#126#125#124#123#122#121#120#119#118#117#116#115#114#113#112#111#110#109#108#107#106#105#104#103#102#101#100#99#98#97#96#95#94#93#92#91#90#89#88#87#86#85#84#83#82#81#80#79#78#77#76#75#74#73#72#71#70#69#68#67#66#65#64#63#62#61#60#59#58#57#56#55#54#53#52#51#50#49#48#47#46#45#44#43#42#41#40#39#38#37#36#35#34#33#32#31#30#29#28#27#26#25#24#23#22#21#20#19#18#17#16#15#14#13#12#11#10#9#8#7#6#5#4#3#2, and #1.

Click the following link for a safe PDF copy: The Islamic State — al-Nabā’ Newsletter #417

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New issue of The Islamic State’s newsletter: “al-Nabā’ #416″

For prior newsletter issues see: #415, #414#413#412#411#410#409#408#407#406#405#404#403#402#401#400#399#398#397#396#395#394,  #393#392#391#390#389#388#387#386#385#384#383#382#381#380#379#378#377#376#375#374#373#372#371#370#369#368#367#366#365#364#363#362#361#360#359#358#357#356#355#354#353#352#351#350#349#348#347#346#345#344#343#342#341#340#339#338#337#336#335#334#333#332#331#330#329#328#327#326#325#324#323#322#321#320#319#318#317#316#315#314#313,  #312#311#310#309#308#307#306#305#304#303#302#301#300#299#298#297#296#295#294#293#292#291#290#289#288#287#286#285#284#283#282#281#280#279#278#277#276#275#274#273#272#271#270#269#268#267#266#265#264#263#262#261#260#259#258#257#256#255#254#253#252#251#250#249#248#247#246#245#244#243#242#241#240#239#238#237#236#235#234#233#232#231#230#229#228#227#226#225#224#223#222#221#220#219#218#217#216#215#214#213#212#211#210#209#208#207#206#205#204#203#202#201#200#199#198#197#196#195#194#193#192#191#190#189#188#187#186#185#184#183#182#181#180#179#178#177#176#175#174#173#172#171#170#169#168#167#166#165#164#163#162#161#160#159#158#157#156#155#154#153#152#151#150#149#148#147#146#145#144#143#142#141#140#139#138#137#136#135#134#133#132#131#130#129#128#127#126#125#124#123#122#121#120#119#118#117#116#115#114#113#112#111#110#109#108#107#106#105#104#103#102#101#100#99#98#97#96#95#94#93#92#91#90#89#88#87#86#85#84#83#82#81#80#79#78#77#76#75#74#73#72#71#70#69#68#67#66#65#64#63#62#61#60#59#58#57#56#55#54#53#52#51#50#49#48#47#46#45#44#43#42#41#40#39#38#37#36#35#34#33#32#31#30#29#28#27#26#25#24#23#22#21#20#19#18#17#16#15#14#13#12#11#10#9#8#7#6#5#4#3#2, and #1.

Click the following link for a safe PDF copy: The Islamic State — al-Nabā’ Newsletter #416

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New issue of The Islamic State’s newsletter: “al-Nabā’ #415″

For prior newsletter issues see: #414, #413#412#411#410#409#408#407#406#405#404#403#402#401#400#399#398#397#396#395#394,  #393#392#391#390#389#388#387#386#385#384#383#382#381#380#379#378#377#376#375#374#373#372#371#370#369#368#367#366#365#364#363#362#361#360#359#358#357#356#355#354#353#352#351#350#349#348#347#346#345#344#343#342#341#340#339#338#337#336#335#334#333#332#331#330#329#328#327#326#325#324#323#322#321#320#319#318#317#316#315#314#313,  #312#311#310#309#308#307#306#305#304#303#302#301#300#299#298#297#296#295#294#293#292#291#290#289#288#287#286#285#284#283#282#281#280#279#278#277#276#275#274#273#272#271#270#269#268#267#266#265#264#263#262#261#260#259#258#257#256#255#254#253#252#251#250#249#248#247#246#245#244#243#242#241#240#239#238#237#236#235#234#233#232#231#230#229#228#227#226#225#224#223#222#221#220#219#218#217#216#215#214#213#212#211#210#209#208#207#206#205#204#203#202#201#200#199#198#197#196#195#194#193#192#191#190#189#188#187#186#185#184#183#182#181#180#179#178#177#176#175#174#173#172#171#170#169#168#167#166#165#164#163#162#161#160#159#158#157#156#155#154#153#152#151#150#149#148#147#146#145#144#143#142#141#140#139#138#137#136#135#134#133#132#131#130#129#128#127#126#125#124#123#122#121#120#119#118#117#116#115#114#113#112#111#110#109#108#107#106#105#104#103#102#101#100#99#98#97#96#95#94#93#92#91#90#89#88#87#86#85#84#83#82#81#80#79#78#77#76#75#74#73#72#71#70#69#68#67#66#65#64#63#62#61#60#59#58#57#56#55#54#53#52#51#50#49#48#47#46#45#44#43#42#41#40#39#38#37#36#35#34#33#32#31#30#29#28#27#26#25#24#23#22#21#20#19#18#17#16#15#14#13#12#11#10#9#8#7#6#5#4#3#2, and #1.

Click the following link for a safe PDF copy: The Islamic State — al-Nabā’ Newsletter #415

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New issue of The Islamic State’s newsletter: “al-Nabā’ #414″

For prior newsletter issues see: #413, #412#411#410#409#408#407#406#405#404#403#402#401#400#399#398#397#396#395#394,  #393#392#391#390#389#388#387#386#385#384#383#382#381#380#379#378#377#376#375#374#373#372#371#370#369#368#367#366#365#364#363#362#361#360#359#358#357#356#355#354#353#352#351#350#349#348#347#346#345#344#343#342#341#340#339#338#337#336#335#334#333#332#331#330#329#328#327#326#325#324#323#322#321#320#319#318#317#316#315#314#313,  #312#311#310#309#308#307#306#305#304#303#302#301#300#299#298#297#296#295#294#293#292#291#290#289#288#287#286#285#284#283#282#281#280#279#278#277#276#275#274#273#272#271#270#269#268#267#266#265#264#263#262#261#260#259#258#257#256#255#254#253#252#251#250#249#248#247#246#245#244#243#242#241#240#239#238#237#236#235#234#233#232#231#230#229#228#227#226#225#224#223#222#221#220#219#218#217#216#215#214#213#212#211#210#209#208#207#206#205#204#203#202#201#200#199#198#197#196#195#194#193#192#191#190#189#188#187#186#185#184#183#182#181#180#179#178#177#176#175#174#173#172#171#170#169#168#167#166#165#164#163#162#161#160#159#158#157#156#155#154#153#152#151#150#149#148#147#146#145#144#143#142#141#140#139#138#137#136#135#134#133#132#131#130#129#128#127#126#125#124#123#122#121#120#119#118#117#116#115#114#113#112#111#110#109#108#107#106#105#104#103#102#101#100#99#98#97#96#95#94#93#92#91#90#89#88#87#86#85#84#83#82#81#80#79#78#77#76#75#74#73#72#71#70#69#68#67#66#65#64#63#62#61#60#59#58#57#56#55#54#53#52#51#50#49#48#47#46#45#44#43#42#41#40#39#38#37#36#35#34#33#32#31#30#29#28#27#26#25#24#23#22#21#20#19#18#17#16#15#14#13#12#11#10#9#8#7#6#5#4#3#2, and #1.

Click the following link for a safe PDF copy: The Islamic State — al-Nabā’ Newsletter #414

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New release from The Islamic State’s Wilāyat Khurāsān: “Palestine Has Been Conquered!”

Click the following link for a safe PDF copy: The Islamic State’s Wilāyat Khurāsān — Palestine Has Been Conquered!

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New issue of The Islamic State’s newsletter: “al-Nabā’ #413″

For prior newsletter issues see: #412, #411#410#409#408#407#406#405#404#403#402#401#400#399#398#397#396#395#394,  #393#392#391#390#389#388#387#386#385#384#383#382#381#380#379#378#377#376#375#374#373#372#371#370#369#368#367#366#365#364#363#362#361#360#359#358#357#356#355#354#353#352#351#350#349#348#347#346#345#344#343#342#341#340#339#338#337#336#335#334#333#332#331#330#329#328#327#326#325#324#323#322#321#320#319#318#317#316#315#314#313,  #312#311#310#309#308#307#306#305#304#303#302#301#300#299#298#297#296#295#294#293#292#291#290#289#288#287#286#285#284#283#282#281#280#279#278#277#276#275#274#273#272#271#270#269#268#267#266#265#264#263#262#261#260#259#258#257#256#255#254#253#252#251#250#249#248#247#246#245#244#243#242#241#240#239#238#237#236#235#234#233#232#231#230#229#228#227#226#225#224#223#222#221#220#219#218#217#216#215#214#213#212#211#210#209#208#207#206#205#204#203#202#201#200#199#198#197#196#195#194#193#192#191#190#189#188#187#186#185#184#183#182#181#180#179#178#177#176#175#174#173#172#171#170#169#168#167#166#165#164#163#162#161#160#159#158#157#156#155#154#153#152#151#150#149#148#147#146#145#144#143#142#141#140#139#138#137#136#135#134#133#132#131#130#129#128#127#126#125#124#123#122#121#120#119#118#117#116#115#114#113#112#111#110#109#108#107#106#105#104#103#102#101#100#99#98#97#96#95#94#93#92#91#90#89#88#87#86#85#84#83#82#81#80#79#78#77#76#75#74#73#72#71#70#69#68#67#66#65#64#63#62#61#60#59#58#57#56#55#54#53#52#51#50#49#48#47#46#45#44#43#42#41#40#39#38#37#36#35#34#33#32#31#30#29#28#27#26#25#24#23#22#21#20#19#18#17#16#15#14#13#12#11#10#9#8#7#6#5#4#3#2, and #1.

Click the following link for a safe PDF copy: The Islamic State — al-Nabā’ Newsletter #413

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