document: there has been an explosive growth in the use of internet not only in india but also worldwide in the last decade . 
   there were about 42 million active internet users in urban india in 2008 as compared to 5 million in 2000 . 
   the internet is used by some to facilitate research , to seek information , for interpersonal communication , and for business transactions . on the other hand 
   , it can be used by some to indulge in pornography , excessive gaming , chatting for long hours , and even gambling . 
   there have been growing concerns worldwide for what has been labeled as  internet addiction . 
   griffith considered it a subset of behavior addiction and any behavior that meets the 6  core components  of addiction , i.e. , salience , mood modification , tolerance , withdrawal , conflict , and relapse . while davis avoided the term internet addiction , referring it as a dependency on psychoactive substances , he instead preferred the term  pathological internet use  ( piu ) . 
   young linked excessive internet use most closely to pathological gambling , a disorder of impulse control in dsm iv and adapted the dsm iv criteria to relate to internet use in the internet addiction test developed by her . according to her , 
   various types of internet addiction are cyber - sexual addiction , cyber - relationship addiction , net compulsions , information overload , and computer addiction . 
   his findings indicated that social isolation plays a greater role in behavioral symptoms of piu than does the presence of psychopathology . 
   hence , caplan suggested replacing the term  pathological internet use  with  problematic internet use . 
   the prevalence found by greenfield was about 6% among the general population , while scherer found it to be 14% among the college - based population . 
   surveys conducted online revealed that 4 - 10% of the users meet the criteria for internet addiction . 
   the addicted averaged 38.5 h / week on a computer , whereas the non - addicted averaged 4.9 h / week . measuring 
   goldberg developed the internet addictive disorder ( iad ) scale by adapting the dsm iv . 
   brenner developed the internet - related addictive behavior inventory ( irabi ) comprising of 32 true and false questions . 
   young initially developed 8-question internet addiction diagnostic questionnaire ( dq ) based on dsm iv . 
   later , she included 12 new items in addition to the 8 items to formulate an internet addiction test ( iat ) . 
   young 's iat is the only available test whose psychometric properties have been tested by widyanto and mcmurran . in india , 
   hence , it was found necessary to study pattern of internet usage in young adults in indian setting and its relationship with their mental and physical health . with this background 
   the aim of the study was to study the prevalence of internet addiction and association of any psychopathology in college going student population in the city of mumbai . 
   the aim of the study was to study the prevalence of internet addiction and association of any psychopathology in college going student population in the city of mumbai . 
   the cross - sectional survey was carried out in 3 different colleges in the city of mumbai during the period of august 
   it covered about 1000 college students ( aged 16 - 18 years ) having access to the internet from the past 6 months . 
   the semi - structured proforma along with the scales were distributed in classes , each with roughly 40 students , and necessary instructions were given . 
   the study was conducted after obtaining the approval from the institutional review board and permission was sought from the college authorities of all the colleges . of the total 1000 students , 13 could not be included in the study as they were not using internet . 
   the tools used in this study were as follows : 
   semi - structured proforma that contained details of demographics , educational qualification and status , purpose of using the internet ( by choosing among the options like education , entertainment , business transactions , or social networking ) , money spent per month , place of access ( home , cybercaf , or workplace if working part - time ) , the time of day when the internet is accessed the most ( by choosing between morning , afternoon , evening , or night ) , and the average duration of use per day . data was collected from those using internet for at least since last 6 months.the internet addiction test ( iat ; young , 1998 ) is a 20-item 5-point likert scale that measures the severity of self - reported compulsive use of the internet . 
   total internet addiction scores are calculated , with possible scores for the sum of 20 items ranging from 20 to 100 . 
   the scale showed very good internal consistency , with an alpha coefficient of 0.93 in the present study.according to young 's criteria , total iat scores 20 - 39 represent average users with complete control of their internet use , scores 40 - 69 represent over - users with frequent problems caused by their internet use , and scores 70 - 100 represent internet addicts with significant problems caused by their internet use.the duke health profile is a 17-item generic questionnaire instrument designed to measure adult self - reported functional health status quantitatively during a 1-week time window . 
   there are 11 scales with maximum score for each scale being 100 and minimum being 0 . 
   six scales ( i.e. , physical health , mental health , social health , general health , perceived health , and self - esteem ) measure function , with high scores indicating better health . five scales ( i.e. , anxiety , depression , anxiety - depression , pain disability ) measure dysfunction , with high scores indicating greater dysfunction . 
   most extensive use was in family practice patients with the broadest spectrum of diagnoses , but it was used in patient populations with specific diagnoses such as insulin - dependent diabetes mellitus , end - stage renal disease , ischemic disease , and impotence . 
   both internal consistency ( cronbach 's alpha ) and temporal stability ( test - retest ) testing have supported reliability of the duke . 
   validity has been supported for the duke scales by ( a ) comparison of the duke scores with scores of other health measures for the same patients , ( b ) comparison of duke scores between patient groups having different clinical diagnostic profiles and severity of illness , and ( c ) prediction of health - related outcomes by duke scores . 
   semi - structured proforma that contained details of demographics , educational qualification and status , purpose of using the internet ( by choosing among the options like education , entertainment , business transactions , or social networking ) , money spent per month , place of access ( home , cybercaf , or workplace if working part - time ) , the time of day when the internet is accessed the most ( by choosing between morning , afternoon , evening , or night ) , and the average duration of use per day . 
   the internet addiction test ( iat ; young , 1998 ) is a 20-item 5-point likert scale that measures the severity of self - reported compulsive use of the internet . 
   total internet addiction scores are calculated , with possible scores for the sum of 20 items ranging from 20 to 100 . 
   the scale showed very good internal consistency , with an alpha coefficient of 0.93 in the present study . 
   according to young 's criteria , total iat scores 20 - 39 represent average users with complete control of their internet use , scores 40 - 69 represent over - users with frequent problems caused by their internet use , and scores 70 - 100 represent internet addicts with significant problems caused by their internet use . 
   the duke health profile is a 17-item generic questionnaire instrument designed to measure adult self - reported functional health status quantitatively during a 1-week time window . 
   there are 11 scales with maximum score for each scale being 100 and minimum being 0 . 
   six scales ( i.e. , physical health , mental health , social health , general health , perceived health , and self - esteem ) measure function , with high scores indicating better health . five scales ( i.e. , anxiety , depression , anxiety - depression , pain disability ) measure dysfunction , with high scores indicating greater dysfunction . 
   most extensive use was in family practice patients with the broadest spectrum of diagnoses , but it was used in patient populations with specific diagnoses such as insulin - dependent diabetes mellitus , end - stage renal disease , ischemic disease , and impotence . 
   both internal consistency ( cronbach 's alpha ) and temporal stability ( test - retest ) testing have supported reliability of the duke . 
   validity has been supported for the duke scales by ( a ) comparison of the duke scores with scores of other health measures for the same patients , ( b ) comparison of duke scores between patient groups having different clinical diagnostic profiles and severity of illness , and ( c ) prediction of health - related outcomes by duke scores . 
   the cross - sectional survey was carried out in 3 different colleges in the city of mumbai during the period of august 
   it covered about 1000 college students ( aged 16 - 18 years ) having access to the internet from the past 6 months . 
   the semi - structured proforma along with the scales were distributed in classes , each with roughly 40 students , and necessary instructions were given . 
   the study was conducted after obtaining the approval from the institutional review board and permission was sought from the college authorities of all the colleges . of the total 1000 students , 13 could not be included in the study as they were not using internet . 
   the tools used in this study were as follows : 
   semi - structured proforma that contained details of demographics , educational qualification and status , purpose of using the internet ( by choosing among the options like education , entertainment , business transactions , or social networking ) , money spent per month , place of access ( home , cybercaf , or workplace if working part - time ) , the time of day when the internet is accessed the most ( by choosing between morning , afternoon , evening , or night ) , and the average duration of use per day . 
   data was collected from those using internet for at least since last 6 months.the internet addiction test ( iat ; young , 1998 ) is a 20-item 5-point likert scale that measures the severity of self - reported compulsive use of the internet . 
   total internet addiction scores are calculated , with possible scores for the sum of 20 items ranging from 20 to 100 . 
   the scale showed very good internal consistency , with an alpha coefficient of 0.93 in the present study.according to young 's criteria , total iat scores 20 - 39 represent average users with complete control of their internet use , scores 40 - 69 represent over - users with frequent problems caused by their internet use , and scores 70 - 100 represent internet addicts with significant problems caused by their internet use.the duke health profile is a 17-item generic questionnaire instrument designed to measure adult self - reported functional health status quantitatively during a 1-week time window . 
   there are 11 scales with maximum score for each scale being 100 and minimum being 0 . 
   six scales ( i.e. , physical health , mental health , social health , general health , perceived health , and self - esteem ) measure function , with high scores indicating better health . 
   five scales ( i.e. , anxiety , depression , anxiety - depression , pain disability ) measure dysfunction , with high scores indicating greater dysfunction . 
   most extensive use was in family practice patients with the broadest spectrum of diagnoses , but it was used in patient populations with specific diagnoses such as insulin - dependent diabetes mellitus , end - stage renal disease , ischemic disease , and impotence . 
   both internal consistency ( cronbach 's alpha ) and temporal stability ( test - retest ) testing have supported reliability of the duke . 
   validity has been supported for the duke scales by ( a ) comparison of the duke scores with scores of other health measures for the same patients , ( b ) comparison of duke scores between patient groups having different clinical diagnostic profiles and severity of illness , and ( c ) prediction of health - related outcomes by duke scores . 
   semi - structured proforma that contained details of demographics , educational qualification and status , purpose of using the internet ( by choosing among the options like education , entertainment , business transactions , or social networking ) , money spent per month , place of access ( home , cybercaf , or workplace if working part - time ) , the time of day when the internet is accessed the most ( by choosing between morning , afternoon , evening , or night ) , and the average duration of use per day . 
   the internet addiction test ( iat ; young , 1998 ) is a 20-item 5-point likert scale that measures the severity of self - reported compulsive use of the internet . 
   total internet addiction scores are calculated , with possible scores for the sum of 20 items ranging from 20 to 100 . 
   the scale showed very good internal consistency , with an alpha coefficient of 0.93 in the present study . according to young 's criteria , total iat scores 20 - 39 represent average users with complete control of their internet use 
   , scores 40 - 69 represent over - users with frequent problems caused by their internet use , and scores 70 - 100 represent internet addicts with significant problems caused by their internet use . 
   the duke health profile is a 17-item generic questionnaire instrument designed to measure adult self - reported functional health status quantitatively during a 1-week time window . 
   there are 11 scales with maximum score for each scale being 100 and minimum being 0 . 
   six scales ( i.e. , physical health , mental health , social health , general health , perceived health , and self - esteem ) measure function , with high scores indicating better health . five scales ( i.e. , anxiety , depression , anxiety - depression , pain disability ) measure dysfunction , with high scores indicating greater dysfunction . 
   most extensive use was in family practice patients with the broadest spectrum of diagnoses , but it was used in patient populations with specific diagnoses such as insulin - dependent diabetes mellitus , end - stage renal disease , ischemic disease , and impotence . 
   both internal consistency ( cronbach 's alpha ) and temporal stability ( test - retest ) testing have supported reliability of the duke . 
   validity has been supported for the duke scales by ( a ) comparison of the duke scores with scores of other health measures for the same patients , ( b ) comparison of duke scores between patient groups having different clinical diagnostic profiles and severity of illness , and ( c ) prediction of health - related outcomes by duke scores . 
   in the present study , out of 1000 students , 13 were excluded and the remaining 987 adolescents who participates included 681 ( 68.9% ) females and 306 ( 31.1% ) males . 
   subjects had more girls than boys as the data was collected during routine lectures and the attendance of girls might have been more 
   the subjects belonged to different streams : 33.5% to science , 30.3% to commerce , and 36.2% to arts . 
   using young 's original criteria , the users were divided into groups : 74.5% as moderate users , 24.8% as possible addicts , and 0.7% as addicts . 
   males in comparison to females were significantly more likely to be addicted ( x2=10.2 , p=0.006 ) . 
   moderate users and the possible addicts used the internet mostly for social networking , academic purposes , chatting , emailing , gaming , and downloading media files and pornography . 
   they indulged more in social networking , chatting , and downloading media files ( x2=76 , p<0.001 ) . 
   significantly , most of the addicts used the internet mostly in the evening and nights as compared to other users who used it in the mornings and afternoons as well ( x2=26.4 , p=00019 ) . 
   interesting findings were noted with respect to the place of accessing internet . about half of the adolescents with addiction were also working part - time and 
   this finding too was statistically significant ( x2=144 , p<0.001 ) . in this study , no significant relationship was found between internet addiction and the hours of use per day . 
   moreover , the criteria used in iat does not take into consideration the exact duration of use . 
   losing track of time while being online and staying online longer than intended are more likely to be seen in addicts . 
   using duke 's health profile , it was found that addicts have poor mental , physical , and mental health score [ figure 1 ] . 
   addicts had high anxiety , depression , and anxiety depression score ( x2=12.26 , p<0.0022 ) [ table 1 ] . internet use and psychopathology 
   a number of studies have been conducted across the world , especially among adolescents with respect to internet addiction . 
   this study is a preliminary step toward understanding the extent of internet addiction among college students in india . 
   the findings of the present study corroborates with previous studies stating that addiction is more common in males than in females(anderson et al . ) . also , the finding that addicts are more likely to use their workplace to access internet is comparable to  internet abuse at workplace  reported by young and case . 
   this could be a confounding factor for comparison as our study had students as subjects . 
   employers have found that employees with access to the internet at their desks spend a considerable amount of their working day engaging in non - work - related internet use ( beard , 2002 ) . in a study done previously , young concluded that depression assessment should be done in suspected cases of piu . 
   although it is not clear whether depression precedes the development of internet abuse or it is a consequence , yet assessment of the same is imperative . in 2005 , a study by nemiz et al 
   . dealt with british university students showed that those students who were pathological internet users had low self - esteem and were socially inhibited online . 
   young showed that withdrawal from significant real - life relationships is a consequence of pathological internet users . 
   in the last one decade , internet has become an integral part of our life . 
   it can put into three groups using young 's original criteria : 74.5% as moderate users , 24.8% as possible addicts , and 0.7% as addicts . 
   those towards the addict part of spectrum reported had high anxiety , depression , and anxiety depression score . in the emerging era , where young people have been more exposed to the internet and use online activity as an important form of social interaction . 
   however , it may still remain a matter of debate whether to call internet addiction a distinct disorder by itself or a behavioral problem secondary to another disorder . at present 
   whether or not we will have any such diagnosis included in the future is yet to be seen . in future , 
   if it is added , it is more likely to be classified as an impulse control disorders not elsewhere classified rather than in the diagnostic criteria for substance dependence . by studying the association of internet usage and its effects on human behavior 
   , we can formulate interventions like setting boundaries and detecting early warning signs of underlying psychopathology at the earliest . 
   in the emerging era , where young people have been more exposed to the internet and use online activity as an important form of social interaction . 
   however , it may still remain a matter of debate whether to call internet addiction a distinct disorder by itself or a behavioral problem secondary to another disorder . at present 
   whether or not we will have any such diagnosis included in the future is yet to be seen . in future , 
   if it is added , it is more likely to be classified as an impulse control disorders not elsewhere classified rather than in the diagnostic criteria for substance dependence . by studying the association of internet usage and its effects on human behavior 
   , we can formulate interventions like setting boundaries and detecting early warning signs of underlying psychopathology at the earliest .
summary: background : there has been an explosive growth of internet use not only in india but also worldwide in the last decade . 
   there is a growing concern about whether this is excessive and , if so , whether it amounts to an addiction.aim:to study the prevalence of internet addiction and associated existing psychopathology in adolescent age group.materials and methods : a cross - sectional study sample comprising of 987 students of various faculties across the city of mumbai was conducted after obtaining institutional ethics committee approval and permission from the concerned colleges . 
   students were assessed with a specially constructed semi - structured proforma and the internet addiction test ( iat ; young , 1998 ) which was self - administered by the students after giving them brief instructions . 
   dukes health profile was used to study physical and psychosocial quality of life of students . 
   subjects were classified into moderate users , possible addicts , and addicts for comparison.results:of the 987 adolescents who took part in the study , 681 ( 68.9% ) were female and 306 ( 31.1% ) were males . 
   the mean age of adolescents was 16.82 years . 
   of the total , about 74.5% were moderate ( average ) users . 
   using young 's original criteria , 0.7% were found to be addicts . those with excessive use internet had high scores on anxiety , depression , and anxiety depression.conclusions:in the emerging era of internet use , we must learn to differentiate excessive internet use from addiction and be vigilant about psychopathology .