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March 29, 2024, 03:07:36 am

Author Topic: VCE Psychology Question Thread!  (Read 469747 times)  Share 

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Ashjames

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Re: VCE Psychology Question Thread!
« Reply #660 on: October 06, 2017, 12:08:34 pm »
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Hey,


Can someone explain reliability and validity to me. I don't get it

Butterflygirl

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Re: VCE Psychology Question Thread!
« Reply #661 on: October 06, 2017, 12:14:03 pm »
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Hey,


Can someone explain reliability and validity to me. I don't get it

Reliability is a measure that the if you repeat an experiment, you will get the same results each time

Validity is a measure of if your actually measuring the DV or something else
Eg. Your results could be reliable, but not valid because it doesn't actually measure what its supposed to measure.

Butterflygirl

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Re: VCE Psychology Question Thread!
« Reply #662 on: October 06, 2017, 12:16:29 pm »
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Whats the interaction between the amygdala, hippocampus, cerebral cortex and cerebellum in storing long term memories??

I know individual functions but I don't understand how they interact.

Thanks guys! :)

Bri MT

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Re: VCE Psychology Question Thread!
« Reply #663 on: October 07, 2017, 05:09:56 pm »
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Whats the interaction between the amygdala, hippocampus, cerebral cortex and cerebellum in storing long term memories??

I know individual functions but I don't understand how they interact.

Thanks guys! :)

There's a couple of different ones.
The cerebellum interprets the mental map made by the hippocampus
The hippocampus encodes memories more strongly when the amygdala signals it in response to noradrenaline
The hippocampus encodes and transfers declarative memories to the cerebral cortex for permanent storage
Both the amygdala and cerebellum are involved in classically conditioned memories

Ashjames

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Re: VCE Psychology Question Thread!
« Reply #664 on: October 07, 2017, 09:52:34 pm »
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 I don't get the role of cortisol in stress? Like, what are the effects of prolonged release of cortisol in the bloodstream?

Bri MT

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Re: VCE Psychology Question Thread!
« Reply #665 on: October 08, 2017, 07:30:25 am »
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I don't get the role of cortisol in stress? Like, what are the effects of prolonged release of cortisol in the bloodstream?

Cortisol is released in the resistance stage of the GAS. It unlocks access to more energy supplies and protects against some of the negative side GAS of stress.  Unfortunately it also has its own side effects, such as impairing immune system action and retarding tissue repair

jrose006

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Re: VCE Psychology Question Thread!
« Reply #666 on: October 08, 2017, 09:33:23 am »
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Can someone please explain standard deviation and what we actually need to know?
I know it’s something like the lower the standard deviation, the more consistent (reliable) the data is.
How does it then also relate to validity?

Butterflygirl

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Re: VCE Psychology Question Thread!
« Reply #667 on: October 08, 2017, 12:40:14 pm »
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How much depth of knowledge do we need to know about Loftus' research into eyewitness testimonies?

Butterflygirl

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Re: VCE Psychology Question Thread!
« Reply #668 on: October 08, 2017, 12:42:30 pm »
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Can someone please explain standard deviation and what we actually need to know?
I know it’s something like the lower the standard deviation, the more consistent (reliable) the data is.
How does it then also relate to validity?

If there's a high standard deviation, it may mean that there are extraneous variables other than the IV affecting the DV as the results are not as close to each other. Thus, less valid.

Someone else confirm? I don't know if its correct.

zofromuxo

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Re: VCE Psychology Question Thread!
« Reply #669 on: October 08, 2017, 01:15:30 pm »
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Can someone please explain standard deviation and what we actually need to know?
I know it’s something like the lower the standard deviation, the more consistent (reliable) the data is.
How does it then also relate to validity?
Standard deviation is the measure used to determine the spread of the data.
Are you sure your not mistaking this for the p-value instead?
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Bri MT

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Re: VCE Psychology Question Thread!
« Reply #670 on: October 08, 2017, 07:01:28 pm »
+1
Can someone please explain standard deviation and what we actually need to know?
I know it’s something like the lower the standard deviation, the more consistent (reliable) the data is.
How does it then also relate to validity?

Standard deviation is related to the bell curve.  1 standard deviation either side of the mean always includes 68% of results, so lower standard deviation means more tightly grouped results/ narrower bell curve. 
Therfore, lower standard deviation increases reliability.

The standard deviation does not provide information about validity.


Note: standard deviation is a descriptive statistic in the study design.  P-value is an inferential statistic not in the study design

zofromuxo

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Re: VCE Psychology Question Thread!
« Reply #671 on: October 08, 2017, 08:35:58 pm »
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Standard deviation is related to the bell curve.  1 standard deviation either side of the mean always includes 68% of results, so lower standard deviation means more tightly grouped results/ narrower bell curve. 
Therfore, lower standard deviation increases reliability.

The standard deviation does not provide information about validity.


Note: standard deviation is a descriptive statistic in the study design.  P-value is an inferential statistic not in the study design
Oh sweet, the more you know.

I'm also lowkey embrassed that I didn't check the study design for changes :( :( :/.
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Ashjames

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Re: VCE Psychology Question Thread!
« Reply #672 on: October 09, 2017, 10:49:36 pm »
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Okay, I really need someone to explain reliability and variability. It's not in my textbook and all the videos I watch just confuse me.

Bri MT

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Re: VCE Psychology Question Thread!
« Reply #673 on: October 10, 2017, 07:23:27 am »
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Okay, I really need someone to explain reliability and variability. It's not in my textbook and all the videos I watch just confuse me.
Validity: the experiment accurately measures the impact of the IV on the DV
Reliability: I get similar, or the same, results every time the experiment is done

Butterflygirl

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Re: VCE Psychology Question Thread!
« Reply #674 on: October 11, 2017, 12:58:16 am »
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Guys how are u learning the content? I started doing practice exams but I feel like I still don't know all the content.