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This thesis aims to to see if its possible to meet some of the complex needs of people with ADHD, in the form of aiding them with remembering to complete tasks and chores. Current studies have mainly focused on either assessing or treating ADHD rather than looking at aiding people already diagnosed. In order to evaluate if the needs can be met the participants of the paper are first interviewed to determine some of the needs. A mobile application was then developed based on the data collected from the interviews and later evaluated by the participants in a second round of interviews. The result of this paper showed that these complex needs can be met, in this paper the needs managed to be met with the use of mobile notifications that server as reminders and also by letting the participants prioritize the importance of the task. However the application did not fully suit all participants and had some shortcomings which could lead to further research that looks at trying to meet more of these needs, either by continued development of the application or by mapping out what the needs are.

Submitted by Vivian Malta Nunes (vivianmalta@yahoo.com.br) on 2013-12-18T16:26:21Z No. of bitstreams: 1 Tese_Vivian_Final.pdf: 1556413 bytes, checksum: d21c4cfb4b686d356131b508247b2cc4 (MD5) / Approved for entry into archive by ÁUREA CORRÊA DA FONSECA CORRÊA DA FONSECA (aurea.fonseca@fgv.br) on 2014-01-28T17:57:42Z (GMT) No. of bitstreams: 1 Tese_Vivian_Final.pdf: 1556413 bytes, checksum: d21c4cfb4b686d356131b508247b2cc4 (MD5) / Approved for entry into archive by Marcia Bacha (marcia.bacha@fgv.br) on 2014-02-03T16:12:27Z (GMT) No. of bitstreams: 1 Tese_Vivian_Final.pdf: 1556413 bytes, checksum: d21c4cfb4b686d356131b508247b2cc4 (MD5) / Made available in DSpace on 2014-02-03T16:12:45Z (GMT). No. of bitstreams: 1 Tese_Vivian_Final.pdf: 1556413 bytes, checksum: d21c4cfb4b686d356131b508247b2cc4 (MD5) Previous issue date: 2013-06-18 / This thesis studies price-setting models and analyzes their macroeconomic im- plications. In the rst two chapters I study general models in which rms pricing decisions are a¤ected by menu costs and information costs. In Chapter 1 I estimate these models using American data on price changes, concluding that: information costs are signi cantly higher than menu costs; real data does not t into the model in which rms receive information about aggregate conditions freely but pay for idio- syncratic information. In Chapter 2 I explore the consequences of monetary shocks and disin ation announcements using the previously estimated models. I show that the degree of monetary non-neutrality is larger in an economy where part of the infor- mation is given for free. Chapter 3 is a coauthored paper with Carlos Carvalho and Antonella Tutino. We abstract from menu costs and examine a price-setting model in which rms are subject to a Shannon constraint on information ow. We calibrate the model and investigate impulse response functions to aggregate and idiosyncratic shocks. We nd that, rather than tracking aggregate and idiosyncratic conditions independently, rms prefer to process information altogether, and that leads to a faster overall price level adjustment, and thus to less real e¤ects persistence after a monetary shock. / Esta tese se dedica ao estudo de modelos de fixação de preços e suas implicações macroeconômicas. Nos primeiros dois capítulos analiso modelos em que as decisões das firmas sobre seus preços praticados levam em conta custos de menu e de informação. No Capítulo 1 eu estimo tais modelos empregando estatísticas de variações de preços dos Estados Unidos, e concluo que: os custos de informação são significativamente maiores que os custos de menu; os dados claramente favorecem o modelo em que informações sobre condições agregadas são custosas enquanto que as idiossincráticas têm custo zero. No Capítulo 2 investigo as consequências de choques monetários e anúncios de desinflação usando os modelos previamente estimados. Mostro que o grau de não-neutralidade monetária é maior no modelo em que parte da informação é grátis. O Capítulo 3 é um artigo em conjunto com Carlos Carvalho (PUC-Rio) e Antonella Tutino (Federal Reserve Bank of Dallas). No artigo examinamos um modelo de fixação de preços em que firmas estão sujeitas a uma restrição de fluxo de informação do tipo Shannon. Calibramos o modelo e estudamos funções impulso-resposta a choques idiossincráticos e agregados. Mostramos que as firmas vão preferir processar informações agregadas e idiossincráticas conjuntamente ao invés de investigá-las separadamente. Este tipo de processamento gera ajustes de preços mais frequentes, diminuindo a persistência de efeitos reais causados por choques monetários.