I've got it and will read at a later time. It would seem to me, that if you want to evaluate 'Technical Analysis', then you need a definition as a starting point. I've taken this from
www.investopedia.com/terms/t/technicalanalysis.asp
Definition of 'Technical Analysis'
A method of evaluating securities by analyzing statistics generated by market activity, such as past prices and volume. Technical analysts do not attempt to measure a security's intrinsic value, but instead use charts and other tools to identify patterns that can suggest future activity.
Take this as a discussion point: if you see on a chart that a share price is dropping, you're unlikely to buy it, you're likely to wait until the price is no longer dropping. This can be done in fact, with or without a chart and in both cases, I personally would argue that it is a simple form of technical analysis. Clearly buying when it's stopped dropping will give you a better long entry than buying 'mid-drop'. So for example if there is no fundamental reason to shy away from the stock, technical analysis has provided a better entry than would be achieved randomly. If you have no plan in place to account for further drops post consolidation, then you're risk is linked to the size of your position. If however, you decide what your risk will be before entering the trade, you'll be stopped out thus limiting your risk (best to understand slippage).
From a quick skim of Hoffman/Sheffrins paper, it seems that investors are categorized based upon self reported preferences e.g. I am a technical analyst or I invest/trade on fundamentals etc. For me that makes interpretation of results quite difficult as it's clear from this website, personal contacts etc that we all have different ways of doing things. At the end of the day, you need to look at the bottom line of your account. If it's going up steadily you're doing ok. If it's not, you need to consider why that might be.