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Media capabilities as a comprehensive construct for research on media choice: Assessment of a measurement model
Unformatted Document Text:  Running head: Assessment of media capabilities model 6 information based on the Shannon and Weaver communication model (1949). Their model emphasized three capabilities such as transmission velocity (the capacity of the channel), parallelism (the number of frequencies that can be simultaneously used in the channel), and symbol sets (the types of symbols that can be sent). In addition to those three technical capabilities, they further developed the concept of media capabilities by incorporating rehearsability and reprocessability. Rehearsability, or editability (Rice, 1987), is the extent to which the media enables the sender to rehearse or revise a message during encoding before sending. Rehearsability is important since it enables the sender to compose and examine a message carefully before transmission; therefore, the rehearsability of a medium will improve the subsequent information decoding and interpretations. Reprocessability, or externally recorded memory (Sproull & Kiesler, 1991), measures the extent to which the medium enables a message to be re-examined or re-processed in the process of decoding (Rice, 1987). Reprocessability is also very important as it provides a memory that can help the subsequent understanding of the activities in the past, based on which a message can be decoded and developed (Nunamaker et al. 1991). Therefore, media capabilities is an individually-based concept. The capabilities of a medium could vary from one user to the other, which depends on the individual’s perceived capabilities of the medium. Construct design and explanations of measures Because the five media capabilities discussed in the previous literature only

Authors: shi, kristy., Ha, Louisa. and Yun, Gi Woong.
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Running head: Assessment of media capabilities model 
information  based  on  the  Shannon  and  Weaver  communication  model  (1949).  Their 
model emphasized three capabilities such as transmission velocity (the capacity of the 
channel),  parallelism  (the  number  of  frequencies  that  can  be  simultaneously  used  in 
the channel), and symbol sets (the types of symbols that can be sent).  In  addition to 
those  three  technical  capabilities,  they  further  developed  the  concept  of  media 
capabilities  by  incorporating  rehearsability  and  reprocessability.  Rehearsability,  or 
editability  (Rice,  1987),  is  the  extent  to  which  the  media  enables  the  sender  to 
rehearse  or  revise  a  message  during  encoding  before  sending.  Rehearsability  is 
important  since  it  enables  the  sender  to  compose  and  examine  a  message  carefully 
before  transmission;  therefore,  the  rehearsability  of  a  medium  will  improve  the 
subsequent  information  decoding  and  interpretations.  Reprocessability,  or  externally 
recorded  memory  (Sproull  &  Kiesler,  1991),  measures  the  extent  to  which  the 
medium  enables  a  message  to  be  re-examined  or  re-processed  in  the  process  of 
decoding  (Rice,  1987).  Reprocessability  is  also  very  important  as  it  provides  a 
memory that can help the subsequent understanding of the activities in the past, based 
on  which  a  message  can  be  decoded  and  developed  (Nunamaker  et  al.  1991). 
Therefore,  media  capabilities  is  an  individually-based  concept.  The  capabilities  of  a 
medium  could  vary  from  one  user  to  the  other,  which  depends  on  the  individual’s 
perceived capabilities of the medium.   
Construct design and explanations of measures 
Because  the  five  media  capabilities  discussed  in  the  previous  literature  only 

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