Peter Brown

@lyrewood
91 Followers
269 Following
953 Posts
Retired vet. History, politics, science, nature, blues but eclectic musical tastes in general
@bouriquet @acdha of course part of the plan is to sow distrust and fear in the community…even friends and family….thinkmUSSR under Stalin…China and the cultural revolution…North Korea under the Kim’s.
@firstdogonthemoon Poverty and unemployment is government policy…it could be alleviated tomorrow but the elite choose not to solve that problem… let’s wring our hands and clutch our pearls over Aukus and WTF is Israel doing instead. Let’s talk about fiscal responsibility, inflation figures and balanced budgets…very much esoteric economic assumptions made over a cup,of tea or a bottle of scotch…. Evidence ?? Come on people we could have a much better life our current system has failed.
@hanse_mina Russia started WW 2 as an ally of the Germans not an opponent… so there you go.
@dbattistella all too true. The time for a new society is now. Capitalism has failed for most of us and most certainly the planet. In general the power structures in place now are not designed to help you…they are designed to maximise growth and profit and the consequences of that approach are ignored by those who gain the most.
So, what to do? We can all do baby steps…grow some of your own food, travel less, build local communities. Outside of that it is politics is the key.

@alesssia @albertcardona @timnitGebru

My bias, from being married to an assessment expert:

Most educators do not understand assessment at all and therefore fail to communicate about it to people using the results for hiring and so on. I have never met anyone who sets a university exam who even knows what construct validity means.

Assessments, broadly, fall into one of two categories, formative and summative. Formative assessments are intended to drive education. You do a formative assessment and it tells you and/or your teacher what areas you need to focus on. Used well, these let educators make far more efficient use of contact time. Summative assessments exist to measure what you have learned.

These need to be designed in different ways. A formative assessment doesn’t necessarily need to give consistent results between cohorts because you just want to use it to guide teaching of this cohort. A summative assessment does because people using them for things like hiring decisions expect the scores to convey information without knowing about the specific year group.

The people in the article are cheating on formative assessments, but the motivation to do this comes from the fact that they are being used as summative assessments .

In a well designed course, the outcome of summative assessments should not be a surprise. Students should know how well they’re doing and the summative assessments should reflect their level.

The most important aspect for these is understanding what they’re measuring and where the discrimination is. If you’re designing a deselection test, you want to have high discrimination in the low end. You want high confidence that someone is, say, in the bottom 40%, but the error margins for people the test puts in the top 20% may be very high. Conversely, a selection test needs high discrimination at the top: you want it to identify the best n people, you don’t care if it incorrectly orders the bottom.

If employers are going to use exam results in one of these ways, they need to know how the exam was designed and what these things actually mean. In my experience, most university exams are not designed considering any of this and so are likely to be inappropriate for most uses employers want to put them to.

Stand with science. Always.
To recognize Palestinians are human has become a flashpoint, a red line to not be crossed in Washington discourse, an invitation to be tagged as an antisemite, whether by your cousin at a Passover seder or by a network morning news anchor on live national television.

https://trib.al/OESQGp2
The Appalling Attack on Ta-Nehisi Coates Is a Massive Media Failing

It is not antisemitic to defend Palestinian human rights. And it’s past time for more American Jews to say so to correct a media that’s lost the thread.

The New Republic
#caturday Say what?
@fuzzface @APBBlue yes, we certainly need reminders of the threat of fascism cloaked as populism. We can’t plead ignorance anymore…we know the beast…what it lives on … divisiveness… and how it survives… complacency.Every vote against it counts, every voice against it counts, every word against it counts.
@APBBlue You mean there is a Trump recycling depot? With his diet he is probably composed of forever molecules and special care may need to be taken of any remnants so that he does not pop up in your depot garden mulch.