subject and keyword. However, few researchers such as Lone et al. (2017) pointed out the
searching strategies of the researchers also use advanced searching techniques such as Boolean
operators, truncations, proximity and phrase search.
The advent of technologies especially search engines has brought significant changes in
researchers’ seeking behaviour (Zhang & Fei, 2010). Researchers retrieve needed information
through the internet and search engines that have reduced their information-overloaded
(Hochstotter & Koch, 2009). Different search engines fulfil information need through
providing access to different databases. Researchers utilize different searching behaviours to
for the adoption of online research databases and thus highly prefer Internet-based information
resources as compared with manual library system (Kumar, 2013). According to Adekunle
(2014), researchers use both offline and online sources of information.
Information sources: It includes persons, books, journals, databases, theses, dissertations,
pamphlets and internet (Bates, 2006). Information source can be categorized as social and
subjective sources or objective and non-relational where social is more significant (Nwagwu,
2012). Information sources, also called a repository of information have significant effects on
ISB. Further, Landry (2006) stated that information source may act as a facilitator of or barrier
to information seeking. Likewise, Majid et al., (2010) explained that researchers prefer to use
primary sources of information such as journal and articles databases, professional networks,
conference abstracts and proceedings, meeting minutes and workshops. Similarly, Nwagwu
(2012) affirmed journals, library collection, textbooks, dissertations, lecture notes, seminar
papers, email, and the Internet as sources of information. Furthermore, Ahmed and Khan
(2014) indicated that university research students in Pakistan use electronic information
sources and resources to fulfil their information needs. Another study in Pakistan by Arshad
and Ameen (2018) explored that academic scientists mostly use electronic information sources
to perform their research activities. Conversely, their findings elaborated that researchers rarely
used library print information sources. Furthermore, Brown Lund and Walton (2007),
Hemminger et al., (2007) and Wang (2013) indicated that a large number of information
sources are currently existed, however the most dominant are library online databases, e-
publications, Google, open access journals and online institutional repositories. Further, these
studies explained that effective use of information sources are dependent on researchers’ ability
in the use of technology and thus the majority of the researchers are facing manifold barriers
in ISB.
Barriers in information seeking - While seeking information researchers face several
barriers which are defined as obstacles which don’t allow to identify, select, access, evaluate
and utilize the needed information (Ogaba, 2012). The phrase information barrier was first
introduced as intervening variables (Wilson, 1999) due to its nature of hindrance and
facilitation. Wilson (1997) classified information barriers as personal, social/interpersonal and
environmental. It has a negative influence on INB. Information barrier arises when the
difference between ideal and actual access to information exist. Extensive studies are available
on barriers to ISB but are contextually different. In terms of developing countries, Kumar
(2013) reported that lack of access to up-to-date information, obsolete library collection,
untrained library staff and insufficient ICT facilities are the foremost barriers. Lone et al.,
(2017) identified several barriers faced by researchers during information seeking such as the
location of information, price, no access to information, lack of access to online databases and
research publications, lack of information retrieval skills and absence of collaboration between
researchers and library staff. Similarly, Kumar (2013), Chinnasamy (2016) also recognized
several barriers in information seeking. However, the major obstacles included inadequate
knowledge of using OPAC and uncooperative attitude of librarians. Also, Natarajan (2012),