# Middle names treated in a random way in the bibliography

I do not have a problem with all authors who have a first and surname only; e.g John Smith. Problems come when introducing middle names. John P. Smith, J. P. Smith, J P Smith, Smith, J. P.

All these are treated randomly using bibtex and biblatex. E.g; some authors appear as Smith (2010) when using \citet from natbib or (Smith, 2010) when using \citep. However, other authors are shown in the main document as (J. P. Smith, 2010) and J. P. Smith, 2010.

This made me crazy, and what's more; when creating the MWE for writing the question, the problem disappeared from some authors.

MWE:

\documentclass[12pt]{report}

\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[UKenglish]{babel}
\usepackage{csquotes}
\usepackage[backend=biber,sorting=nyt,style=apa,natbib=true]{biblatex}
\DeclareLanguageMapping{british}{british-apa}

\begin{document}

\begin{itemize}

\item Doesn't work: \citet{Sutherland92} stated that \ldots \citep{Sutherland92}.
\item Works \citet{Bliss95} stated that \ldots \citep{Bliss95}.
\item Doesn't work: \citet{Sutherland82} stated that \ldots \citep{Sutherland82}.
\item Works! \citet{AusubelRobinson69} stated that \ldots \citep{AusubelRobinson69}.
\item Works: \citet{Ausubel68} stated that \ldots \citep{Ausubel68} (This doesn't work in the original document!!!)
\item Works: \citet{Bruner61} stated that \ldots \citep{Bruner61} (This doesn't work in the original document!!!)
\item \citet{Bruner66} stated that \ldots \citep{Bruner66} (Also doesn't work in original document :( )

\end{itemize}

\printbibliography

\end{document}


sample bib file:

@ARTICLE{Bliss95,
author = {Bliss, Joan},
title = {Piaget and after: the case of learning science},
year = {1995},
editor = {Bliss 95},
volume = {25},
number = {1},
pages = {139-172},
journal = {Studies in Science Education},
timestamp = {2012.05.22}
}

@BOOK{Ausubel68,
author = {Ausubel, David P.},
title = {Education Psychology: A cognitive View},
year = {1968},
publisher = {Holt, Rinhart and Winston},
timestamp = {2012.05.22}
}

@BOOK{AusubelRobinson69,
author = {Ausubel, David P. and Robinson, Floyd G.},
title = {School Learning: an Introduction to Educational Psychology},
year = {1969},
publisher = {Holt, Reinhart and Winston},
timestamp = {2012.05.22}
}

@BOOK{Sutherland92,
author = {Sutherland, Peter},
title = {Cognitive Development Today: Piaget and his Critics},
year = {1992},
publisher = {Sage Publications Ltd},
timestamp = {2012.05.22}
}

@ARTICLE{Sutherland82,
author = {Sutherland, Paul A.},
title = {An Expansion of Peel's Describer - Explainer Stage Theory},
year = {1982},
volume = {34},
number = {1},
pages = {69-76},
journal = {Educational Review},
timestamp = {2012.05.22}
}

@ARTICLE{Bruner61,
author = {Bruner, Jerome S.},
title = {The Act of Discovery},
year = {1961},
editor = {Bruner 61},
volume = {31},
number = {1},
pages = {31-32},
journal = {Harvard Educational Review},
publisher = {Bruner 61},
timestamp = {2012.05.22}
}

@BOOK{Bruner66,
author = {Jerome S. Bruner},
title = {Toward a Theory of Instruction},
year = {1966},
publisher = {Bruner 66},
timestamp = {2012.05.22}
}


I am more confused now as I keep adding references (that do not work originally) to the sample file and they work properly. It's only the Sutherlands that don't work in this sample. Does anyone know what is happening?

Edit: Before I read the comments, I noticed that in the bbl file, the entries where the problem occur have the following data in the entry:

 \entry{Sutherland92}{book}{}
\name{labelname}{1}{}{%
{{uniquename=1,hash=19d7df1fb93fb36727a88eb47c7919c6}{Sutherland}{S\bibinitperiod}{Peter}{P\bibinitperiod}{}{}{}{}}%
}
\name{author}{1}{}{%
{{uniquename=1,hash=19d7df1fb93fb36727a88eb47c7919c6}{Sutherland}{S\bibinitperiod}{Peter}{P\bibinitperiod}{}{}{}{}}%
}
\list{location}{1}{%
{London, UK}%
}
\list{publisher}{1}{%
{Sage Publications Ltd}%
}
\strng{namehash}{19d7df1fb93fb36727a88eb47c7919c6}
\strng{fullhash}{19d7df1fb93fb36727a88eb47c7919c6}
\field{sortinit}{S}
\field{labelyear}{1992}
\field{labeltitle}{Cognitive Development Today: Piaget and his Critics}
\field{title}{Cognitive Development Today: Piaget and his Critics}
\field{year}{1992}
\endentry


uniquename=1 is repeated twice in each entry. However, for the working entries, the first uniquename is equal to zero.

Edit2: uniquename=false as an option solves it, I get it now :)

-
I get the warning Package biblatex Warning: Macro 'reviewauthor' undefined.. Something missing in your MWE? –  Kurt Sep 19 '12 at 23:54
Have you tried with uniquename=false as an option of biblatex? –  Guido Sep 20 '12 at 0:07
I did find this in the log but It's not stopping the file from compiling. However, I just found something that may help. See edit. –  pythonista Sep 20 '12 at 0:13
@Guido, thanks a lot, that did it. If you submit that as an answer I will accept it. –  pythonista Sep 20 '12 at 0:19

In the .bib file there are two different authors with the same family name, thus biblatex (biber) disambiguates then by introducing the initials in the references and citations. Using the biber backend (backend=biber) one can prevent (and customise) the behaviour using the
uniquename=false

option of biblatex.